You're going to be severely disappointed if you expect French and German players, in general, to speak English, let alone the Russians that have been plentiful.
I have the same experience, the times I did mic up with someone else on my random team, they were communicating in their native language. Blizzard has facilitated this too much in their games by offering regional servers in WoW and excellent translations of almost all their games in the main non-English languages.
Communication in general has been a letdown so far, I'm too used to playing with Belgian, Dutch, Scandinavian and British players in World of Warcraft.