Since this is a direct sequel to Modern Warfare 2, perhaps Our Heroes flee to these countries to hide out? Whatever the case is, a tall building is getting blown up but good.
The Russian speaker at the end is translated as thus:
America: "One, destroy the enemy's hopes for victory."
England: "Two, use everything to your advantage."
France: "Three, attack from unexpected sides."
Germany: "Four, attack your enemy's weakness."
Check out the teasers in the video below.