Gaijin has just announced that the US game server is up and operational:
Pilots!If you can't take my word for it and want proof ... here you go:
Now we have a separate gaming cluster for War Thunder players from USA, Canada, South America, Australia and New Zealand.
Dedicated War Thunder servers significantly improve the connection and reduces ping greatly. So the game is now much more comfortable to play and more improvements are to come!
War Thunder automatically select your region and connects you to the most efficient server. Also, you may select the desired server manually as well. This options are available in the Menu window before entering the battle.
Day by day we make War Thunder better. Thank you for supporting us and see you soon in War Thunder skies!