I feel like i have to step in this COD discussion.
The modern warfare games is all about WW3. Imran Zakhaev started it by killing the Russian president. Some guy named Nikolai is a rebel witch is on your team, so you save him. and hes Russian.
In MW2, you try to stop it by killing Makarov, but General Shepherd betrays you and you kill him first, now in MW3 you go out to kill Makarov.