diff --git a/app/src/main/res/values-da/strings.xml b/app/src/main/res/values-da/strings.xml
index c1ef4daa6..cc0627e35 100644
--- a/app/src/main/res/values-da/strings.xml
+++ b/app/src/main/res/values-da/strings.xml
@@ -124,6 +124,19 @@
          opens a dialog box that contains settings that an application or Web developer might want to change. -->
     <string name="settings_developer_options">Indstillinger for udviklere</string>
 
+    <!-- This string is used in the 'Settings' window when user is not signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_in">Log in på konto</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_manage">Håndter konto</string>
+
+    <!-- This string is used in the 'Account' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_out">Log ud</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
+         Most common reason for this state is that the account password was changed on another device. -->
+    <string name="settings_fxa_account_reconnect">Genopret forbindelse</string>
+
     <!-- This string is used to label a button in the 'Settings' dialog window that, when pressed,
          opens a dialog box that contains language-related settings. -->
     <string name="settings_language">Sprog</string>
@@ -274,6 +287,16 @@
          a the survey web site in opened in the currently focused window -->
     <string name="settings_send_your_feedback">Send din feedback</string>
 
+    <!-- This string is used in the 'Settings' window when user is signed-out of Firefox Accounts -->
+    <string name="settings_accounts_sign_in">Log ind</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_accounts_sign_out">Log ud</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
+         Most common reason for this state is that the account password was changed on another device. -->
+    <string name="settings_accounts_reconnect">Genopret forbindelse</string>
+
     <!-- This string is the title of a dialog box shown to the user when a settings
          change requires the application to restart. -->
     <string name="restart_dialog_restart">Genstart påkrævet</string>
@@ -473,6 +496,59 @@
          for the home page. -->
     <string name="developer_options_homepage">Startside</string>
 
+    <!-- This string is used to in the FxA account manage panel as a description of the Sign In/Out button. -->
+    <string name="fxa_account_options_account">Konto</string>
+
+    <!-- This string is used to in the FxA account manage panel as a header for the sync options. -->
+    <string name="fxa_account_options_sync_title">Indstillinger for synkronisering</string>
+
+    <!-- This string is used to in the FxA account manage panel as the description of the Sync button when is not syncing.
+         The sync button will start syncing when pressed-->
+    <string name="fxa_account_options_sync_now">Synkroniser nu</string>
+
+    <!-- This string is used to in the FxA account manage panel as the description of the Sync button while syncon.
+         The sync button will start syncing when pressed-->
+    <string name="fxa_account_options_syncing">Synkroniserer...</string>
+
+    <!-- This string is used in the FxA account manager panel as a header for the sync options for syncing
+         history, bookmarks, passwords, etc. -->
+    <string name="fxa_account_options_sync_description">Vælg hvad du vil synkronisere på dine enheder med Firefox </string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the Bookmarks sync switch. -->
+    <string name="fxa_account_options_bookmarks_sync">Bogmærker</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the History sync switch. -->
+    <string name="fxa_account_options_history_sync">Historik</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the Sign In/Out button. -->
+    <string name="fxa_account_options_reset">Nulstil</string>
+
+    <!-- This string is used to in the Library panels in the sync button when the user is not signed in. -->
+    <string name="fxa_account_sing_to_sync">Log ind på din konto for at synkronisere</string>
+
+    <!-- This string is used to in the Library panels in the sync button when syncing is off. -->
+    <string name="fxa_account_sync_settings">Indstillinger for synkronisering</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced. -->
+    <string name="fxa_account_last_synced_now">Senest synkroniseret lige nu</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the content has never been synced yet. -->
+    <string name="fxa_account_last_no_synced">Ikke synkroniseret endnu</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the syncing is off. -->
+    <string name="fxa_account_syncing_off">Synkronisering er slået fra</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that there was an error while syncing. -->
+    <string name="fxa_account_last_sync_error">Synkroniserings-fejl</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced some time ago. -->
+    <string name="fxa_account_last_synced">Senest synkroniseret for %1$d minutter siden</string>
+
     <!-- This string labels an Allow/Don't Allow switch in the Privacy and Security settings dialog
      and is used to enable or disable playback of DRM controlled content. -->
     <string name="security_options_drm_content">Afspil DRM-kontrolleret indhold (&lt;a href=&quot;https://da.wikipedia.org/wiki/Digital_Rights_Management&quot;&gt;Læs mere&lt;/a&gt;)</string>
@@ -546,6 +622,14 @@
     <!-- This string is displayed below the On/Off switch to indicate a switch's current state as 'Off'. -->
     <string name="off">Fra</string>
 
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="sync">Synkroniser</string>
+
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="do_not_sync">Synkroniser ikke</string>
+
     <!-- This string is displayed in the voice-search dialog box that is shown to the user when they press the
          button used to initiate Voice Search. -->
     <string name="voice_search_start">Hvad vil du søge efter på nettet?</string>
@@ -682,6 +766,21 @@
     <!-- This string is displayed in the middle of the Bookmarks List while the bookmarks are being loaded. -->
     <string name="bookmarks_loading">Indlæser bogmærker</string>
 
+    <!-- This string is displayed as the title of the folder containing mobile bookmarks (after they're synced). -->
+    <string name="bookmarks_mobile_folder_title">Mobil-bogmærker</string>
+
+    <!-- This string is displayed as the title of the folder containing desktop bookmarks (after they're synced). -->
+    <string name="bookmarks_desktop_folder_title">Skrivebords-bogmærker</string>
+
+    <!-- This string is displayed as the title of the desktop "menu" bookmarks folder. -->
+    <string name="bookmarks_desktop_menu_title">Bogmærke-menuen</string>
+
+    <!-- This string is displayed as the title of the desktop "toolbar" bookmarks folder. -->
+    <string name="bookmarks_desktop_toolbar_title">Bogmærkelinje</string>
+
+    <!-- This string is displayed as the title of the desktop "unfiled" bookmarks folder. -->
+    <string name="bookmarks_desktop_unfiled_title">Andre bogmærker</string>
+
     <!-- This string is displayed in a tooltip that appears when a user hovers
          over an icon representing 'Remove Bookmark' for an individual bookmark
          item listed in the Bookmarks List. -->
@@ -710,6 +809,10 @@
          all the bookmarks. -->
     <string name="bookmarks_show_all">Vis alle bogmærker</string>
 
+    <!-- This string is displayed is the "Sync" button in the bookmarks panel. When pressed the
+         bookmarks are synced with the Firefox account. -->
+    <string name="bookmarks_sync">Synkroniser</string>
+
     <!-- This string is displayed as the title of the history list, which contains the user's visited websites. -->
     <string name="history_title">Historik</string>
 
@@ -738,6 +841,13 @@
          clearing history is displayed. -->
     <string name="history_clear">Ryd historik</string>
 
+    <!-- This string is displayed is the "Sync" button in the history panel. When pressed the
+         history is synced with the Firefox account. -->
+    <string name="fxa_sync">Synkroniser</string>
+
+    <!-- This string is displayed is the "Sync" button in the history panel when the sync is in progress. -->
+    <string name="fxa_syncing">Synkroniserer…</string>
+
     <!-- This string is displayed is the "Cancel" button from the clear history dialog.
          When pressed the dialog is closed. -->
     <string name="history_clear_cancel">Annuller</string>
@@ -770,6 +880,10 @@
          the more button is pressed in a history item. It opens the selected history item in a new window. -->
     <string name="history_context_menu_new_window">Åbn i et nyt vindue</string>
 
+    <!-- This string is displayed is the history context menu that is displayed when
+         the more button is pressed in a history item. It opens the selected history item in a new tab. -->
+    <string name="history_context_menu_new_tab">Åbn i et nyt faneblad</string>
+
     <!-- This string is displayed is the history context menu that is displayed when
          the more button is pressed in a history item. It add the selected items to favorites. -->
     <string name="history_context_add_bookmarks">Føj til bogmærker</string>
@@ -885,6 +999,10 @@
          browser's navigation bar. The button it labels, when pressed, clears the navigation bar text. -->
     <string name="clear_tooltip">Ryd</string>
 
+    <!-- This string is for the tooltip that appears upon hovering the 'Pop-Up' button in the
+         browser's navigation bar. The button it labels, when pressed, Shows the pop-up blocked dialog. -->
+    <string name="popup_tooltip">Pop op-vindue blokeret</string>
+
     <!-- This string is for the tooltip that when clicking the 'Info' (ⓘ) icon visible next to the current website's
          URL in the URL bar. The button it labels, when pressed, shows information about the site. -->
     <string name="site_info_tooltip">Vis info om websted.</string>
@@ -906,10 +1024,10 @@
     <string name="private_browsing_exit_tooltip">Afslut privat browsing</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new window. -->
-    <string name="context_menu_open_new_window">Åbn i et nyt vindue.</string>
+    <string name="context_menu_open_new_window_1">Åbn i et nyt vindue</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new tab. -->
-    <string name="context_menu_open_new_tab">Åbn i et nyt faneblad.</string>
+    <string name="context_menu_open_new_tab_1">Åbn i et nyt faneblad</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it copies the target to the clipboard -->
     <string name="context_menu_copy_link">Kopier link</string>
@@ -1077,7 +1195,7 @@
 
     <!-- This string is displayed on the right button of the pop-up blocking dialog.
          If the button is clicked the pop-up will be blocked -->
-    <string name="popup_block_button_do_not_show">Vis ikke</string>
+    <string name="popup_block_button_cancel">Annuller</string>
 
     <!-- This string is displayed in a button on the header of the tabs dialog. When clicked,
         it allows to select tabs from the tab -->
@@ -1132,4 +1250,77 @@ the Select` button. When clicked it closes all the previously selected tabs -->
     <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
      tabs tray button then a tab has been added on the background. -->
     <string name="tab_added_notification">Nyt faneblad tilføjet!</string>
+
+    <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
+     tabs tray button then a tab has been sent. -->
+    <string name="tab_sent_notification">Faneblad sendt!</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the send tab dialog -->
+    <string name="hamburger_menu_send_tab">Send faneblad til enhed</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the window resize panel -->
+    <string name="hamburger_menu_resize">Tilpas vinduesstørrelse</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it switches User Agent from desktop to mobile and vice versa -->
+    <string name="hamburger_menu_switch_to_desktop">Skrivebords-tilstand</string>
+
+    <!-- This string is displayed in the tooltip that is displayed when the user hovers the hamburger menu icon -->
+    <string name="hamburger_menu_tooltip">Menu</string>
+
+    <!-- This string is displayed in the title of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_title">Send faneblad til enhed</string>
+
+    <!-- This string is displayed in the description of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_description">Vælg en enhed for at sende fanebladet.</string>
+
+    <!-- This string is displayed on top of the available devices list. -->
+    <string name="send_tab_dialog_options_header">Tilgængelige enheder:</string>
+
+    <!-- This string is displayed instead of the devices list if there are no available devices. -->
+    <string name="send_tab_dialog_no_devices">Ingen enheder forbundet.</string>
+
+    <!-- This string is displayed instead of the devices list if the devices list is being synced. -->
+    <string name="send_tab_dialog_syncing">Synkroniserer…</string>
+
+    <!-- This string is displayed in the button of the Send Tab to device dialog. When clicked the current tab is sent to the selected device -->
+    <string name="send_tab_dialog_button">Send</string>
+
+    <!-- This string is displayed in the header of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_title_1">Log ind for at sende faneblade</string>
+
+    <!-- This string is displayed in the body of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_body_1">Log ind eller opret en ny Firefox-konto for at sende faneblade fra Firefox på din computer eller din mobile enhed til dit headset.</string>
+
+    <!-- This string is displayed in the body of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_body_sub_1">Med en Firefox-konto kan du nemt synkronisere bogmærker og historik mellem alle dine enheder.</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the user is redirected to the Firefox Account sign-in page. -->
+    <string name="whats_new_button_sign_in">Log ind</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the dialog is dismissed. -->
+    <string name="whats_new_button_start_browsing">Gå i gang</string>
+
+
+    <!-- This string is displayed in the title of the slow script dialog. -->
+    <string name="slow_script_dialog_title">Langsomt script</string>
+
+    <!-- This string is displayed as a description below the title of slow script dialog.
+        '%1$s' will be replaced the script filename that is causing the slow down. -->
+    <string name="slow_script_dialog_description">En webside får din browser til at være langsom (%1$s). Hvad vil du gøre?</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+        it stops the slow script that is causing the web page slow down. -->
+    <string name="slow_script_dialog_action_stop">Stop siden</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+       it continues to wait for execution of the web page script that caused the slow down. -->
+    <string name="slow_script_dialog_action_wait">Vent</string>
 </resources>
diff --git a/app/src/main/res/values-es-rES/strings.xml b/app/src/main/res/values-es-rES/strings.xml
index b0b2d20b6..63ff0e560 100644
--- a/app/src/main/res/values-es-rES/strings.xml
+++ b/app/src/main/res/values-es-rES/strings.xml
@@ -124,6 +124,19 @@
          opens a dialog box that contains settings that an application or Web developer might want to change. -->
     <string name="settings_developer_options">Opciones de desarrollador</string>
 
+    <!-- This string is used in the 'Settings' window when user is not signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_in">Iniciar sesión en cuenta</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_manage">Administrar cuenta</string>
+
+    <!-- This string is used in the 'Account' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_out">Cerrar sesión</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
+         Most common reason for this state is that the account password was changed on another device. -->
+    <string name="settings_fxa_account_reconnect">Volver a conectar</string>
+
     <!-- This string is used to label a button in the 'Settings' dialog window that, when pressed,
          opens a dialog box that contains language-related settings. -->
     <string name="settings_language">Idioma</string>
@@ -274,6 +287,16 @@
          a the survey web site in opened in the currently focused window -->
     <string name="settings_send_your_feedback">Envíanos tus comentarios</string>
 
+    <!-- This string is used in the 'Settings' window when user is signed-out of Firefox Accounts -->
+    <string name="settings_accounts_sign_in">Iniciar sesión</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_accounts_sign_out">Cerrar sesión</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
+         Most common reason for this state is that the account password was changed on another device. -->
+    <string name="settings_accounts_reconnect">Volver a conectar</string>
+
     <!-- This string is the title of a dialog box shown to the user when a settings
          change requires the application to restart. -->
     <string name="restart_dialog_restart">Se requiere reiniciar</string>
@@ -472,6 +495,55 @@
          for the home page. -->
     <string name="developer_options_homepage">Página de inicio</string>
 
+    <!-- This string is used to in the FxA account manage panel as a description of the Sign In/Out button. -->
+    <string name="fxa_account_options_account">Cuenta</string>
+
+    <!-- This string is used to in the FxA account manage panel as a header for the sync options. -->
+    <string name="fxa_account_options_sync_title">Configuración de sincronización</string>
+
+    <!-- This string is used to in the FxA account manage panel as the description of the Sync button when is not syncing.
+         The sync button will start syncing when pressed-->
+    <string name="fxa_account_options_sync_now">Sincronizar ahora</string>
+
+    <!-- This string is used to in the FxA account manage panel as the description of the Sync button while syncon.
+         The sync button will start syncing when pressed-->
+    <string name="fxa_account_options_syncing">Sincronizando...</string>
+
+    <!-- This string is used in the FxA account manager panel as a header for the sync options for syncing
+         history, bookmarks, passwords, etc. -->
+    <string name="fxa_account_options_sync_description">Elije qué sincronizar en tus dispositivos con Firefox</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the Bookmarks sync switch. -->
+    <string name="fxa_account_options_bookmarks_sync">Marcadores</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the History sync switch. -->
+    <string name="fxa_account_options_history_sync">Historial</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the Sign In/Out button. -->
+    <string name="fxa_account_options_reset">Restablecer</string>
+
+    <!-- This string is used to in the Library panels in the sync button when the user is not signed in. -->
+    <string name="fxa_account_sing_to_sync">Iniciar sesión en la cuenta para sincronizar</string>
+
+    <!-- This string is used to in the Library panels in the sync button when syncing is off. -->
+    <string name="fxa_account_sync_settings">Configuración de sincronización</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced. -->
+    <string name="fxa_account_last_synced_now">Última sincronización: ahora</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the content has never been synced yet. -->
+    <string name="fxa_account_last_no_synced">Aún no sincronizado</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the syncing is off. -->
+    <string name="fxa_account_syncing_off">La sincronización está desactivada</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that there was an error while syncing. -->
+    <string name="fxa_account_last_sync_error">Error en la sincronización</string>
+
     <!-- This string labels an Allow/Don't Allow switch in the Privacy and Security settings dialog
      and is used to enable or disable playback of DRM controlled content. -->
     <string name="security_options_drm_content">Reproducir contenido controlado por DRM (&lt;a href=&quot;http://somesite.com/&quot;&gt;Saber más&lt;/a&gt;)</string>
@@ -906,12 +978,6 @@
          and hovers over the 'Private Browsing' icon in the browser's tray menu. -->
     <string name="private_browsing_exit_tooltip">Salir de la navegación privada</string>
 
-    <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new window. -->
-    <string name="context_menu_open_new_window">Abrir en una nueva ventana.</string>
-
-    <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new tab. -->
-    <string name="context_menu_open_new_tab">Abrir en una nueva pestaña.</string>
-
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it copies the target to the clipboard -->
     <string name="context_menu_copy_link">Copiar enlace</string>
 
@@ -1076,10 +1142,6 @@
          If the button is clicked the pop-up will be shown -->
     <string name="popup_block_button_show">Mostrar</string>
 
-    <!-- This string is displayed on the right button of the pop-up blocking dialog.
-         If the button is clicked the pop-up will be blocked -->
-    <string name="popup_block_button_do_not_show">No mostrar</string>
-
     <!-- This string is displayed in a button on the header of the tabs dialog. When clicked,
         it allows to select tabs from the tab -->
     <string name="tabs_select">Seleccionar</string>
@@ -1133,4 +1195,6 @@ the Select` button. When clicked it closes all the previously selected tabs -->
     <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
      tabs tray button then a tab has been added on the background. -->
     <string name="tab_added_notification">¡Nueva pestaña añadida!</string>
-</resources>
+
+
+    </resources>
diff --git a/app/src/main/res/values-fi/strings.xml b/app/src/main/res/values-fi/strings.xml
index a095baffc..f755b3614 100644
--- a/app/src/main/res/values-fi/strings.xml
+++ b/app/src/main/res/values-fi/strings.xml
@@ -124,6 +124,19 @@
          opens a dialog box that contains settings that an application or Web developer might want to change. -->
     <string name="settings_developer_options">Kehittäjävalinnat</string>
 
+    <!-- This string is used in the 'Settings' window when user is not signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_in">Kirjaudu tilille</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_manage">Hallitse tiliä</string>
+
+    <!-- This string is used in the 'Account' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_out">Kirjaudu ulos</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
+         Most common reason for this state is that the account password was changed on another device. -->
+    <string name="settings_fxa_account_reconnect">Yhdistä uudelleen</string>
+
     <!-- This string is used to label a button in the 'Settings' dialog window that, when pressed,
          opens a dialog box that contains language-related settings. -->
     <string name="settings_language">Kieli</string>
@@ -241,6 +254,16 @@
          a the survey web site in opened in the currently focused window -->
     <string name="settings_send_your_feedback">Lähetä palautetta</string>
 
+    <!-- This string is used in the 'Settings' window when user is signed-out of Firefox Accounts -->
+    <string name="settings_accounts_sign_in">Kirjaudu sisään</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_accounts_sign_out">Kirjaudu ulos</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
+         Most common reason for this state is that the account password was changed on another device. -->
+    <string name="settings_accounts_reconnect">Yhdistä uudelleen</string>
+
     <!-- This string is the title of a dialog box shown to the user when a settings
          change requires the application to restart. -->
     <string name="restart_dialog_restart">Uudelleenkäynnistys vaaditaan</string>
@@ -353,6 +376,49 @@
          for the home page. -->
     <string name="developer_options_homepage">Aloitussivu</string>
 
+    <!-- This string is used to in the FxA account manage panel as a description of the Sign In/Out button. -->
+    <string name="fxa_account_options_account">Tili</string>
+
+    <!-- This string is used to in the FxA account manage panel as a header for the sync options. -->
+    <string name="fxa_account_options_sync_title">Synkronointiasetukset</string>
+
+    <!-- This string is used to in the FxA account manage panel as the description of the Sync button when is not syncing.
+         The sync button will start syncing when pressed-->
+    <string name="fxa_account_options_sync_now">Synkronoi nyt</string>
+
+    <!-- This string is used to in the FxA account manage panel as the description of the Sync button while syncon.
+         The sync button will start syncing when pressed-->
+    <string name="fxa_account_options_syncing">Synkronoidaaan...</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the Bookmarks sync switch. -->
+    <string name="fxa_account_options_bookmarks_sync">Kirjanmerkit</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the History sync switch. -->
+    <string name="fxa_account_options_history_sync">Historia</string>
+
+    <!-- This string is used to in the Library panels in the sync button when syncing is off. -->
+    <string name="fxa_account_sync_settings">Synkronointiasetukset</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced. -->
+    <string name="fxa_account_last_synced_now">Viimeksi synkronoitu nyt</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the content has never been synced yet. -->
+    <string name="fxa_account_last_no_synced">Ei vielä synkronoitu</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the syncing is off. -->
+    <string name="fxa_account_syncing_off">Synkronointi on kytketty pois päältä</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that there was an error while syncing. -->
+    <string name="fxa_account_last_sync_error">Synkronointivirhe</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced some time ago. -->
+    <string name="fxa_account_last_synced">Viimeksi synkronoitu %1$d minuuttia sitten</string>
+
     <!-- This string labels an On/Off switch in the Privacy and Security settings dialog
      and is used to enable or disable tracking protection. -->
     <string name="security_options_tracking_protection">Seurannan suojaus</string>
@@ -383,6 +449,10 @@
     <!-- This string is displayed below the On/Off switch to indicate a switch's current state as 'Off'. -->
     <string name="off">Pois</string>
 
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="do_not_sync">Älä synkronoi</string>
+
     <!-- This string is displayed in the voice-search dialog box that is shown to the user when they press the
          button used to initiate Voice Search. -->
     <string name="voice_search_start">Mitä haluat etsiä verkosta?</string>
@@ -490,6 +560,21 @@
     <!-- This string is displayed in the middle of the Bookmarks List while the bookmarks are being loaded. -->
     <string name="bookmarks_loading">Ladataan kirjanmerkkejä</string>
 
+    <!-- This string is displayed as the title of the folder containing mobile bookmarks (after they're synced). -->
+    <string name="bookmarks_mobile_folder_title">Kannettavan laitteen kirjanmerkit</string>
+
+    <!-- This string is displayed as the title of the folder containing desktop bookmarks (after they're synced). -->
+    <string name="bookmarks_desktop_folder_title">Työpöydän kirjanmerkit</string>
+
+    <!-- This string is displayed as the title of the desktop "menu" bookmarks folder. -->
+    <string name="bookmarks_desktop_menu_title">Kirjanmerkkivalikko</string>
+
+    <!-- This string is displayed as the title of the desktop "toolbar" bookmarks folder. -->
+    <string name="bookmarks_desktop_toolbar_title">Kirjanmerkkipalkki</string>
+
+    <!-- This string is displayed as the title of the desktop "unfiled" bookmarks folder. -->
+    <string name="bookmarks_desktop_unfiled_title">Muut kirjanmerkit</string>
+
     <!-- This string is displayed in a tooltip that appears when a user hovers
          over an icon representing 'Remove Bookmark' for an individual bookmark
          item listed in the Bookmarks List. -->
@@ -578,6 +663,10 @@
          the more button is pressed in a history item. It opens the selected history item in a new window. -->
     <string name="history_context_menu_new_window">Avaa uuteen ikkunaan</string>
 
+    <!-- This string is displayed is the history context menu that is displayed when
+         the more button is pressed in a history item. It opens the selected history item in a new tab. -->
+    <string name="history_context_menu_new_tab">Avaa uuteen välilehteen</string>
+
     <!-- This string is displayed is the history context menu that is displayed when
          the more button is pressed in a history item. It add the selected items to favorites. -->
     <string name="history_context_add_bookmarks">Lisää kirjanmerkkeihin</string>
@@ -693,6 +782,10 @@
          browser's navigation bar. The button it labels, when pressed, clears the navigation bar text. -->
     <string name="clear_tooltip">Tyhjennä</string>
 
+    <!-- This string is for the tooltip that appears upon hovering the 'Pop-Up' button in the
+         browser's navigation bar. The button it labels, when pressed, Shows the pop-up blocked dialog. -->
+    <string name="popup_tooltip">Ponnahdusikkuna estetty</string>
+
     <!-- This string is for the tooltip that when clicking the 'Info' (ⓘ) icon visible next to the current website's
          URL in the URL bar. The button it labels, when pressed, shows information about the site. -->
     <string name="site_info_tooltip">Näytä sivuston tiedot.</string>
@@ -714,10 +807,10 @@
     <string name="private_browsing_exit_tooltip">Poistu yksityisestä selauksesta</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new window. -->
-    <string name="context_menu_open_new_window">Avaa uuteen ikkunaan.</string>
+    <string name="context_menu_open_new_window_1">Avaa uuteen ikkunaan</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new tab. -->
-    <string name="context_menu_open_new_tab">Avaa uuteen välilehteen.</string>
+    <string name="context_menu_open_new_tab_1">Avaa uuteen välilehteen</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it copies the target to the clipboard -->
     <string name="context_menu_copy_link">Kopioi linkki</string>
@@ -816,13 +909,24 @@
          when there is one window left. When clicked, it closes the private session -->
     <string name="private_clear_button">Tyhjennä</string>
 
+    <!-- This string is displayed in the title of the pop-up blocking dialog.
+         '%1$s' will be replaced at runtime with the app's name. -->
+    <string name="popup_block_title">%1$s esti ponnahdusikkunan tältä sivustolta</string>
+
+    <!-- This string is displayed as a description below the title of the pop-up blocking dialog. -->
+    <string name="popup_block_description">Haluatko nähdä ponnahdusikkunat silti?</string>
+
+    <!-- This string is displayed on the right of the checkbox in the the pop-up blocking dialog.
+         If the checkbox is checked Firefox will never ask again to block pop-ups for this site -->
+    <string name="popup_block_checkbox">Älä kysy uudestaan tämän sivuston kohdalla</string>
+
     <!-- This string is displayed on the left button of the pop-up blocking dialog.
          If the button is clicked the pop-up will be shown -->
     <string name="popup_block_button_show">Näytä</string>
 
     <!-- This string is displayed on the right button of the pop-up blocking dialog.
          If the button is clicked the pop-up will be blocked -->
-    <string name="popup_block_button_do_not_show">Älä näytä</string>
+    <string name="popup_block_button_cancel">Peruuta</string>
 
     <!-- This string is displayed in a button on the header of the tabs dialog. When clicked,
         it allows to select tabs from the tab -->
@@ -844,6 +948,10 @@ the Select` button. When clicked it closes all the previously selected tabs -->
      When clicked it closes all the available tabs -->
     <string name="tabs_close_all">Sulje kaikki</string>
 
+    <!-- This string is displayed in a label on the header of the tabs dialog. It indicates that there is one tab
+        available -->
+    <string name="tabs_counter_singular">1 välilehti</string>
+
     <!-- This string is displayed in a label on the header of the tabs dialog. It indicates that there are n tabs available.
         %1$s expands to a integer which indicates the number of tabs. This number is always larger than 1, ortherwise
         tabs_counter_singular key is used-->
@@ -869,4 +977,51 @@ the Select` button. When clicked it closes all the previously selected tabs -->
     <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
      tabs tray button then a tab has been added on the background. -->
     <string name="tab_added_notification">Uusi välilehti lisätty!</string>
+
+    <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
+     tabs tray button then a tab has been sent. -->
+    <string name="tab_sent_notification">Välilehti lähetetty!</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the send tab dialog -->
+    <string name="hamburger_menu_send_tab">Lähetä välilehti laitteeseen</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it switches User Agent from desktop to mobile and vice versa -->
+    <string name="hamburger_menu_switch_to_desktop">Työpöytätila</string>
+
+    <!-- This string is displayed in the tooltip that is displayed when the user hovers the hamburger menu icon -->
+    <string name="hamburger_menu_tooltip">Valikko</string>
+
+    <!-- This string is displayed in the title of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_title">Lähetä välilehti laitteeseen</string>
+
+    <!-- This string is displayed on top of the available devices list. -->
+    <string name="send_tab_dialog_options_header">Käytettävissä olevat laitteet:</string>
+
+    <!-- This string is displayed instead of the devices list if there are no available devices. -->
+    <string name="send_tab_dialog_no_devices">Ei yhdistettyjä laitteita.</string>
+
+    <!-- This string is displayed instead of the devices list if the devices list is being synced. -->
+    <string name="send_tab_dialog_syncing">Synkronoidaan...</string>
+
+    <!-- This string is displayed in the button of the Send Tab to device dialog. When clicked the current tab is sent to the selected device -->
+    <string name="send_tab_dialog_button">Lähetä</string>
+
+    <!-- This string is displayed in the header of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_title_1">Kirjaudu sisään lähettääksesi välilehtiä</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the dialog is dismissed. -->
+    <string name="whats_new_button_start_browsing">Aloita selaaminen</string>
+
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+        it stops the slow script that is causing the web page slow down. -->
+    <string name="slow_script_dialog_action_stop">Pysäytä se</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+       it continues to wait for execution of the web page script that caused the slow down. -->
+    <string name="slow_script_dialog_action_wait">Odota</string>
 </resources>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 293f14f5b..1fe0c4eb7 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -127,6 +127,9 @@
     <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
     <string name="settings_fxa_account_manage">Gérer le compte</string>
 
+    <!-- This string is used in the 'Account' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_out">Déconnexion</string>
+
     <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
          Most common reason for this state is that the account password was changed on another device. -->
     <string name="settings_fxa_account_reconnect">Se reconnecter</string>
@@ -277,6 +280,12 @@
         opens the Firfox Reality support web site in the browser window. -->
     <string name="settings_help">Aide</string>
 
+    <!-- This string is used in the 'Settings' window when user is signed-out of Firefox Accounts -->
+    <string name="settings_accounts_sign_in">Connexion</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_accounts_sign_out">Déconnexion</string>
+
     <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
          Most common reason for this state is that the account password was changed on another device. -->
     <string name="settings_accounts_reconnect">Se reconnecter</string>
@@ -509,6 +518,10 @@
     <!-- This string is used to in the Library panels in the sync button when syncing is off. -->
     <string name="fxa_account_sync_settings">Paramètres de synchronisation</string>
 
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the syncing is off. -->
+    <string name="fxa_account_syncing_off">La synchronisation est désactivée</string>
+
     <!-- This string is used to in the Library panels to the left of the sync button to indicate
          that there was an error while syncing. -->
     <string name="fxa_account_last_sync_error">Erreur de synchronisation</string>
@@ -591,6 +604,10 @@
     <!-- This string is displayed below the On/Off switch to indicate a switch's current state as 'Off'. -->
     <string name="off">Désactivé</string>
 
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="sync">Synchronisation</string>
+
     <!-- This string is displayed in the voice-search dialog box that is shown to the user when they press the
          button used to initiate Voice Search. -->
     <string name="voice_search_start">Que souhaitez-vous rechercher sur le Web ?</string>
@@ -972,6 +989,9 @@
          and hovers over the 'Private Browsing' icon in the browser's tray menu. -->
     <string name="private_browsing_exit_tooltip">Quitter la navigation privée</string>
 
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new tab. -->
+    <string name="context_menu_open_new_tab_1">Ouvrir dans un nouvel onglet</string>
+
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it copies the target to the clipboard -->
     <string name="context_menu_copy_link">Copier le lien</string>
 
@@ -1132,4 +1152,9 @@
          If the button is clicked the pop-up will be shown -->
     <string name="popup_block_button_show">Afficher</string>
 
+    <!-- This string is displayed on the right button of the pop-up blocking dialog.
+         If the button is clicked the pop-up will be blocked -->
+    <string name="popup_block_button_cancel">Annuler</string>
+
+
     </resources>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 7348727e5..d7a287b77 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -124,6 +124,19 @@
          opens a dialog box that contains settings that an application or Web developer might want to change. -->
     <string name="settings_developer_options">開発者オプション</string>
 
+    <!-- This string is used in the 'Settings' window when user is not signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_in">アカウントにログイン</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_manage">アカウントを管理</string>
+
+    <!-- This string is used in the 'Account' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_out">ログアウト</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
+         Most common reason for this state is that the account password was changed on another device. -->
+    <string name="settings_fxa_account_reconnect">再接続</string>
+
     <!-- This string is used to label a button in the 'Settings' dialog window that, when pressed,
          opens a dialog box that contains language-related settings. -->
     <string name="settings_language">言語</string>
@@ -274,6 +287,16 @@
          a the survey web site in opened in the currently focused window -->
     <string name="settings_send_your_feedback">フィードバックを送る</string>
 
+    <!-- This string is used in the 'Settings' window when user is signed-out of Firefox Accounts -->
+    <string name="settings_accounts_sign_in">ログイン</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_accounts_sign_out">ログアウト</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
+         Most common reason for this state is that the account password was changed on another device. -->
+    <string name="settings_accounts_reconnect">再接続</string>
+
     <!-- This string is the title of a dialog box shown to the user when a settings
          change requires the application to restart. -->
     <string name="restart_dialog_restart">再起動が必要です</string>
@@ -472,6 +495,59 @@
          for the home page. -->
     <string name="developer_options_homepage">ホームページ</string>
 
+    <!-- This string is used to in the FxA account manage panel as a description of the Sign In/Out button. -->
+    <string name="fxa_account_options_account">アカウント</string>
+
+    <!-- This string is used to in the FxA account manage panel as a header for the sync options. -->
+    <string name="fxa_account_options_sync_title">Sync 設定</string>
+
+    <!-- This string is used to in the FxA account manage panel as the description of the Sync button when is not syncing.
+         The sync button will start syncing when pressed-->
+    <string name="fxa_account_options_sync_now">今すぐ同期</string>
+
+    <!-- This string is used to in the FxA account manage panel as the description of the Sync button while syncon.
+         The sync button will start syncing when pressed-->
+    <string name="fxa_account_options_syncing">同期中...</string>
+
+    <!-- This string is used in the FxA account manager panel as a header for the sync options for syncing
+         history, bookmarks, passwords, etc. -->
+    <string name="fxa_account_options_sync_description">端末上の同期して Firefox で使用するものを選んでください</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the Bookmarks sync switch. -->
+    <string name="fxa_account_options_bookmarks_sync">ブックマーク</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the History sync switch. -->
+    <string name="fxa_account_options_history_sync">履歴</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the Sign In/Out button. -->
+    <string name="fxa_account_options_reset">リセット</string>
+
+    <!-- This string is used to in the Library panels in the sync button when the user is not signed in. -->
+    <string name="fxa_account_sing_to_sync">アカウントにログインして同期</string>
+
+    <!-- This string is used to in the Library panels in the sync button when syncing is off. -->
+    <string name="fxa_account_sync_settings">Sync 設定</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced. -->
+    <string name="fxa_account_last_synced_now">最終同期日時: 直前</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the content has never been synced yet. -->
+    <string name="fxa_account_last_no_synced">まだ同期していません</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the syncing is off. -->
+    <string name="fxa_account_syncing_off">同期がオフです</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that there was an error while syncing. -->
+    <string name="fxa_account_last_sync_error">Sync エラー</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced some time ago. -->
+    <string name="fxa_account_last_synced">最終同期日時: %1$d 分前</string>
+
     <!-- This string labels an Allow/Don't Allow switch in the Privacy and Security settings dialog
      and is used to enable or disable playback of DRM controlled content. -->
     <string name="security_options_drm_content">DRM 制御のコンテンツを再生 (&lt;a href=&quot;http://somesite.com/&quot;&gt;詳細&lt;/a&gt;)</string>
@@ -546,6 +622,14 @@
     <!-- This string is displayed below the On/Off switch to indicate a switch's current state as 'Off'. -->
     <string name="off">オフ</string>
 
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="sync">同期する</string>
+
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="do_not_sync">同期しない</string>
+
     <!-- This string is displayed in the voice-search dialog box that is shown to the user when they press the
          button used to initiate Voice Search. -->
     <string name="voice_search_start">何を検索しますか？</string>
@@ -682,6 +766,21 @@
     <!-- This string is displayed in the middle of the Bookmarks List while the bookmarks are being loaded. -->
     <string name="bookmarks_loading">ブックマークを読み込んでいます</string>
 
+    <!-- This string is displayed as the title of the folder containing mobile bookmarks (after they're synced). -->
+    <string name="bookmarks_mobile_folder_title">モバイルのブックマーク</string>
+
+    <!-- This string is displayed as the title of the folder containing desktop bookmarks (after they're synced). -->
+    <string name="bookmarks_desktop_folder_title">デスクトップのブックマーク</string>
+
+    <!-- This string is displayed as the title of the desktop "menu" bookmarks folder. -->
+    <string name="bookmarks_desktop_menu_title">ブックマークメニュー</string>
+
+    <!-- This string is displayed as the title of the desktop "toolbar" bookmarks folder. -->
+    <string name="bookmarks_desktop_toolbar_title">ブックマークツールバー</string>
+
+    <!-- This string is displayed as the title of the desktop "unfiled" bookmarks folder. -->
+    <string name="bookmarks_desktop_unfiled_title">他のブックマーク</string>
+
     <!-- This string is displayed in a tooltip that appears when a user hovers
          over an icon representing 'Remove Bookmark' for an individual bookmark
          item listed in the Bookmarks List. -->
@@ -710,6 +809,10 @@
          all the bookmarks. -->
     <string name="bookmarks_show_all">すべてのブックマークを表示</string>
 
+    <!-- This string is displayed is the "Sync" button in the bookmarks panel. When pressed the
+         bookmarks are synced with the Firefox account. -->
+    <string name="bookmarks_sync">同期</string>
+
     <!-- This string is displayed as the title of the history list, which contains the user's visited websites. -->
     <string name="history_title">履歴</string>
 
@@ -738,6 +841,13 @@
          clearing history is displayed. -->
     <string name="history_clear">履歴を消去</string>
 
+    <!-- This string is displayed is the "Sync" button in the history panel. When pressed the
+         history is synced with the Firefox account. -->
+    <string name="fxa_sync">同期</string>
+
+    <!-- This string is displayed is the "Sync" button in the history panel when the sync is in progress. -->
+    <string name="fxa_syncing">同期中...</string>
+
     <!-- This string is displayed is the "Cancel" button from the clear history dialog.
          When pressed the dialog is closed. -->
     <string name="history_clear_cancel">キャンセル</string>
@@ -770,6 +880,10 @@
          the more button is pressed in a history item. It opens the selected history item in a new window. -->
     <string name="history_context_menu_new_window">新しいウィンドウで開く</string>
 
+    <!-- This string is displayed is the history context menu that is displayed when
+         the more button is pressed in a history item. It opens the selected history item in a new tab. -->
+    <string name="history_context_menu_new_tab">新しいタブで開く</string>
+
     <!-- This string is displayed is the history context menu that is displayed when
          the more button is pressed in a history item. It add the selected items to favorites. -->
     <string name="history_context_add_bookmarks">ブックマークに追加</string>
@@ -885,6 +999,10 @@
          browser's navigation bar. The button it labels, when pressed, clears the navigation bar text. -->
     <string name="clear_tooltip">消去します</string>
 
+    <!-- This string is for the tooltip that appears upon hovering the 'Pop-Up' button in the
+         browser's navigation bar. The button it labels, when pressed, Shows the pop-up blocked dialog. -->
+    <string name="popup_tooltip">ポップアップをブロックしました</string>
+
     <!-- This string is for the tooltip that when clicking the 'Info' (ⓘ) icon visible next to the current website's
          URL in the URL bar. The button it labels, when pressed, shows information about the site. -->
     <string name="site_info_tooltip">サイトの情報を表示</string>
@@ -906,10 +1024,10 @@
     <string name="private_browsing_exit_tooltip">プライベートブラウジングを終了</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new window. -->
-    <string name="context_menu_open_new_window">新しいウィンドウで開く</string>
+    <string name="context_menu_open_new_window_1">新しいウィンドウで開く</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new tab. -->
-    <string name="context_menu_open_new_tab">新しいタブで開く</string>
+    <string name="context_menu_open_new_tab_1">新しいタブで開く</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it copies the target to the clipboard -->
     <string name="context_menu_copy_link">リンクをコピー</string>
@@ -1077,7 +1195,7 @@
 
     <!-- This string is displayed on the right button of the pop-up blocking dialog.
          If the button is clicked the pop-up will be blocked -->
-    <string name="popup_block_button_do_not_show">表示しない</string>
+    <string name="popup_block_button_cancel">キャンセル</string>
 
     <!-- This string is displayed in a button on the header of the tabs dialog. When clicked,
         it allows to select tabs from the tab -->
@@ -1132,4 +1250,78 @@ the Select` button. When clicked it closes all the previously selected tabs -->
     <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
      tabs tray button then a tab has been added on the background. -->
     <string name="tab_added_notification">新しいタブが追加されました！</string>
+
+
+    <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
+     tabs tray button then a tab has been sent. -->
+    <string name="tab_sent_notification">タブを送信しました</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the send tab dialog -->
+    <string name="hamburger_menu_send_tab">タブを端末へ送信</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the window resize panel -->
+    <string name="hamburger_menu_resize">ウィンドウサイズを変更</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it switches User Agent from desktop to mobile and vice versa -->
+    <string name="hamburger_menu_switch_to_desktop">デスクトップモード</string>
+
+    <!-- This string is displayed in the tooltip that is displayed when the user hovers the hamburger menu icon -->
+    <string name="hamburger_menu_tooltip">メニュー</string>
+
+    <!-- This string is displayed in the title of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_title">タブを端末へ送信</string>
+
+    <!-- This string is displayed in the description of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_description">タブの送信先の端末を選んでください。</string>
+
+    <!-- This string is displayed on top of the available devices list. -->
+    <string name="send_tab_dialog_options_header">利用可能な端末:</string>
+
+    <!-- This string is displayed instead of the devices list if there are no available devices. -->
+    <string name="send_tab_dialog_no_devices">接続された端末がありません。</string>
+
+    <!-- This string is displayed instead of the devices list if the devices list is being synced. -->
+    <string name="send_tab_dialog_syncing">同期中...</string>
+
+    <!-- This string is displayed in the button of the Send Tab to device dialog. When clicked the current tab is sent to the selected device -->
+    <string name="send_tab_dialog_button">送信</string>
+
+    <!-- This string is displayed in the header of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_title_1">ログインしてタブを送信</string>
+
+    <!-- This string is displayed in the body of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_body_1">Firefox アカウントにログインまたはアカウント登録をして、タブをデスクトップまたはモバイル端末の Firefox からヘッドセットへ送信できます。</string>
+
+    <!-- This string is displayed in the body of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_body_sub_1">Firefox アカウントを利用して、ブックマークや履歴をご使用のすべての端末と同期することもできます。</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the user is redirected to the Firefox Account sign-in page. -->
+    <string name="whats_new_button_sign_in">ログイン</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the dialog is dismissed. -->
+    <string name="whats_new_button_start_browsing">ブラウジングを始める</string>
+
+
+    <!-- This string is displayed in the title of the slow script dialog. -->
+    <string name="slow_script_dialog_title">動作の遅いスクリプト</string>
+
+    <!-- This string is displayed as a description below the title of slow script dialog.
+        '%1$s' will be replaced the script filename that is causing the slow down. -->
+    <string name="slow_script_dialog_description">ウェブページ (%1$s) がブラウザーの動作を遅くしています。どうしますか？</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+        it stops the slow script that is causing the web page slow down. -->
+    <string name="slow_script_dialog_action_stop">停止</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+       it continues to wait for execution of the web page script that caused the slow down. -->
+    <string name="slow_script_dialog_action_wait">待機</string>
 </resources>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 464b34a11..14e9afd1a 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -125,6 +125,19 @@
          opens a dialog box that contains settings that an application or Web developer might want to change. -->
     <string name="settings_developer_options">Настройки разработчика</string>
 
+    <!-- This string is used in the 'Settings' window when user is not signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_in">Войти в аккаунт</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_manage">Управление аккаунтом</string>
+
+    <!-- This string is used in the 'Account' window when user is signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_out">Выйти</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
+         Most common reason for this state is that the account password was changed on another device. -->
+    <string name="settings_fxa_account_reconnect">Переподключиться</string>
+
     <!-- This string is used to label a button in the 'Settings' dialog window that, when pressed,
          opens a dialog box that contains language-related settings. -->
     <string name="settings_language">Язык</string>
@@ -275,6 +288,16 @@
          a the survey web site in opened in the currently focused window -->
     <string name="settings_send_your_feedback">Отправьте свой отзыв</string>
 
+    <!-- This string is used in the 'Settings' window when user is signed-out of Firefox Accounts -->
+    <string name="settings_accounts_sign_in">Войти</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
+    <string name="settings_accounts_sign_out">Выйти</string>
+
+    <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account, but needs to re-enter their password.
+         Most common reason for this state is that the account password was changed on another device. -->
+    <string name="settings_accounts_reconnect">Переподключиться</string>
+
     <!-- This string is the title of a dialog box shown to the user when a settings
          change requires the application to restart. -->
     <string name="restart_dialog_restart">Требуется перезапуск</string>
@@ -473,6 +496,59 @@
          for the home page. -->
     <string name="developer_options_homepage">Домашняя страница</string>
 
+    <!-- This string is used to in the FxA account manage panel as a description of the Sign In/Out button. -->
+    <string name="fxa_account_options_account">Аккаунт</string>
+
+    <!-- This string is used to in the FxA account manage panel as a header for the sync options. -->
+    <string name="fxa_account_options_sync_title">Параметры синхронизации</string>
+
+    <!-- This string is used to in the FxA account manage panel as the description of the Sync button when is not syncing.
+         The sync button will start syncing when pressed-->
+    <string name="fxa_account_options_sync_now">Синхронизировать</string>
+
+    <!-- This string is used to in the FxA account manage panel as the description of the Sync button while syncon.
+         The sync button will start syncing when pressed-->
+    <string name="fxa_account_options_syncing">Синхронизация...</string>
+
+    <!-- This string is used in the FxA account manager panel as a header for the sync options for syncing
+         history, bookmarks, passwords, etc. -->
+    <string name="fxa_account_options_sync_description">Выберите, что нужно синхронизировать на ваших устройствах при помощи Firefox</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the Bookmarks sync switch. -->
+    <string name="fxa_account_options_bookmarks_sync">Закладки</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the History sync switch. -->
+    <string name="fxa_account_options_history_sync">Историю</string>
+
+    <!-- This string is used to in the FxA account manage panel as a description for the Sign In/Out button. -->
+    <string name="fxa_account_options_reset">Сбросить</string>
+
+    <!-- This string is used to in the Library panels in the sync button when the user is not signed in. -->
+    <string name="fxa_account_sing_to_sync">Войдите в аккаунт, чтобы начать синхронизацию</string>
+
+    <!-- This string is used to in the Library panels in the sync button when syncing is off. -->
+    <string name="fxa_account_sync_settings">Параметры синхронизации</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced. -->
+    <string name="fxa_account_last_synced_now">Синхронизировано только что</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the content has never been synced yet. -->
+    <string name="fxa_account_last_no_synced">Ещё не синхронизировано</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the syncing is off. -->
+    <string name="fxa_account_syncing_off">Синхронизация отключена</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that there was an error while syncing. -->
+    <string name="fxa_account_last_sync_error">Ошибка синхронизации</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced some time ago. -->
+    <string name="fxa_account_last_synced">Последняя синхронизация: %1$d минут назад</string>
+
     <!-- This string labels an Allow/Don't Allow switch in the Privacy and Security settings dialog
      and is used to enable or disable playback of DRM controlled content. -->
     <string name="security_options_drm_content">Воспроизводить контролируемое DRM содержимое (&lt;a href=&quot;http://somesite.com/&quot;&gt;Узнать больше&lt;/a&gt;)</string>
@@ -547,6 +623,14 @@
     <!-- This string is displayed below the On/Off switch to indicate a switch's current state as 'Off'. -->
     <string name="off">Отключено</string>
 
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="sync">Синхронизировать</string>
+
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="do_not_sync">Не синхронизировать</string>
+
     <!-- This string is displayed in the voice-search dialog box that is shown to the user when they press the
          button used to initiate Voice Search. -->
     <string name="voice_search_start">Что бы вы хотели найти в Интернете?</string>
@@ -683,6 +767,21 @@
     <!-- This string is displayed in the middle of the Bookmarks List while the bookmarks are being loaded. -->
     <string name="bookmarks_loading">Загружаем закладки</string>
 
+    <!-- This string is displayed as the title of the folder containing mobile bookmarks (after they're synced). -->
+    <string name="bookmarks_mobile_folder_title">Мобильные закладки</string>
+
+    <!-- This string is displayed as the title of the folder containing desktop bookmarks (after they're synced). -->
+    <string name="bookmarks_desktop_folder_title">Закладки на компьютере</string>
+
+    <!-- This string is displayed as the title of the desktop "menu" bookmarks folder. -->
+    <string name="bookmarks_desktop_menu_title">Меню закладок</string>
+
+    <!-- This string is displayed as the title of the desktop "toolbar" bookmarks folder. -->
+    <string name="bookmarks_desktop_toolbar_title">Панель закладок</string>
+
+    <!-- This string is displayed as the title of the desktop "unfiled" bookmarks folder. -->
+    <string name="bookmarks_desktop_unfiled_title">Другие закладки</string>
+
     <!-- This string is displayed in a tooltip that appears when a user hovers
          over an icon representing 'Remove Bookmark' for an individual bookmark
          item listed in the Bookmarks List. -->
@@ -711,6 +810,10 @@
          all the bookmarks. -->
     <string name="bookmarks_show_all">Все закладки</string>
 
+    <!-- This string is displayed is the "Sync" button in the bookmarks panel. When pressed the
+         bookmarks are synced with the Firefox account. -->
+    <string name="bookmarks_sync">Синхронизировать</string>
+
     <!-- This string is displayed as the title of the history list, which contains the user's visited websites. -->
     <string name="history_title">История</string>
 
@@ -739,6 +842,13 @@
          clearing history is displayed. -->
     <string name="history_clear">Удалить историю</string>
 
+    <!-- This string is displayed is the "Sync" button in the history panel. When pressed the
+         history is synced with the Firefox account. -->
+    <string name="fxa_sync">Синхронизировать</string>
+
+    <!-- This string is displayed is the "Sync" button in the history panel when the sync is in progress. -->
+    <string name="fxa_syncing">Синхронизация…</string>
+
     <!-- This string is displayed is the "Cancel" button from the clear history dialog.
          When pressed the dialog is closed. -->
     <string name="history_clear_cancel">Отмена</string>
@@ -771,6 +881,10 @@
          the more button is pressed in a history item. It opens the selected history item in a new window. -->
     <string name="history_context_menu_new_window">Открыть в новом окне</string>
 
+    <!-- This string is displayed is the history context menu that is displayed when
+         the more button is pressed in a history item. It opens the selected history item in a new tab. -->
+    <string name="history_context_menu_new_tab">Открыть в новой вкладке</string>
+
     <!-- This string is displayed is the history context menu that is displayed when
          the more button is pressed in a history item. It add the selected items to favorites. -->
     <string name="history_context_add_bookmarks">Добавить в закладки</string>
@@ -887,6 +1001,10 @@
          browser's navigation bar. The button it labels, when pressed, clears the navigation bar text. -->
     <string name="clear_tooltip">Очистить</string>
 
+    <!-- This string is for the tooltip that appears upon hovering the 'Pop-Up' button in the
+         browser's navigation bar. The button it labels, when pressed, Shows the pop-up blocked dialog. -->
+    <string name="popup_tooltip">Всплывающее окно заблокировано</string>
+
     <!-- This string is for the tooltip that when clicking the 'Info' (ⓘ) icon visible next to the current website's
          URL in the URL bar. The button it labels, when pressed, shows information about the site. -->
     <string name="site_info_tooltip">Показать информацию о сайте.</string>
@@ -908,10 +1026,10 @@
     <string name="private_browsing_exit_tooltip">Выйти из Приватного просмотра</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new window. -->
-    <string name="context_menu_open_new_window">Открыть в новом окне.</string>
+    <string name="context_menu_open_new_window_1">Открыть в новом окне</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new tab. -->
-    <string name="context_menu_open_new_tab">Открыть в новой вкладке.</string>
+    <string name="context_menu_open_new_tab_1">Открыть в новой вкладке</string>
 
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it copies the target to the clipboard -->
     <string name="context_menu_copy_link">Копировать ссылку</string>
@@ -1078,7 +1196,7 @@
 
     <!-- This string is displayed on the right button of the pop-up blocking dialog.
          If the button is clicked the pop-up will be blocked -->
-    <string name="popup_block_button_do_not_show">Не показывать</string>
+    <string name="popup_block_button_cancel">Отмена</string>
 
     <!-- This string is displayed in a button on the header of the tabs dialog. When clicked,
         it allows to select tabs from the tab -->
@@ -1133,4 +1251,77 @@ the Select` button. When clicked it closes all the previously selected tabs -->
     <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
      tabs tray button then a tab has been added on the background. -->
     <string name="tab_added_notification">Добавлена новая вкладка!</string>
+
+    <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
+     tabs tray button then a tab has been sent. -->
+    <string name="tab_sent_notification">Вкладка отправлена!</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the send tab dialog -->
+    <string name="hamburger_menu_send_tab">Отправить вкладку на устройство</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the window resize panel -->
+    <string name="hamburger_menu_resize">Изменить размеры окна</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it switches User Agent from desktop to mobile and vice versa -->
+    <string name="hamburger_menu_switch_to_desktop">Версия для ПК</string>
+
+    <!-- This string is displayed in the tooltip that is displayed when the user hovers the hamburger menu icon -->
+    <string name="hamburger_menu_tooltip">Меню</string>
+
+    <!-- This string is displayed in the title of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_title">Отправить вкладку на устройство</string>
+
+    <!-- This string is displayed in the description of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_description">Выберите устройство, на которое нужно отправить вкладку.</string>
+
+    <!-- This string is displayed on top of the available devices list. -->
+    <string name="send_tab_dialog_options_header">Доступные устройства:</string>
+
+    <!-- This string is displayed instead of the devices list if there are no available devices. -->
+    <string name="send_tab_dialog_no_devices">Ни одного устройства не подключено.</string>
+
+    <!-- This string is displayed instead of the devices list if the devices list is being synced. -->
+    <string name="send_tab_dialog_syncing">Синхронизация...</string>
+
+    <!-- This string is displayed in the button of the Send Tab to device dialog. When clicked the current tab is sent to the selected device -->
+    <string name="send_tab_dialog_button">Отправить</string>
+
+    <!-- This string is displayed in the header of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_title_1">Войдите, чтобы отправлять вкладки</string>
+
+    <!-- This string is displayed in the body of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_body_1">Войдите или создайте новый Аккаунт Firefox, чтобы отправлять вкладки с Firefox на ПК или мобильного устройства на вашу гарнитуру.</string>
+
+    <!-- This string is displayed in the body of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_body_sub_1">Аккаунт Firefox также позволит вам синхронизировать закладки и историю на всех ваших устройствах.</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the user is redirected to the Firefox Account sign-in page. -->
+    <string name="whats_new_button_sign_in">Войти</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the dialog is dismissed. -->
+    <string name="whats_new_button_start_browsing">Начать веб-сёрфинг</string>
+
+
+    <!-- This string is displayed in the title of the slow script dialog. -->
+    <string name="slow_script_dialog_title">Тяжёлый скрипт</string>
+
+    <!-- This string is displayed as a description below the title of slow script dialog.
+        '%1$s' will be replaced the script filename that is causing the slow down. -->
+    <string name="slow_script_dialog_description">Веб-страница замедляет ваш браузер (%1$s). Что бы вы хотели сделать?</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+        it stops the slow script that is causing the web page slow down. -->
+    <string name="slow_script_dialog_action_stop">Остановить её</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+       it continues to wait for execution of the web page script that caused the slow down. -->
+    <string name="slow_script_dialog_action_wait">Подождать</string>
 </resources>