Because these games are made to appeal to americans, and americans number one punchclock villains are in order:
Terrorists/Islamists/Arab people in general excluding Israel.
Communists (most likely russians)
Soviets (always russians, because the Soviet Union apperently didnt span over most of fucking asia...)
Russians (in Post Cold War settings where the Soviet Union doesn´t exist.)
Nazis
Other americans.
So you have russians occupying three slots of these, so the probability of russians to appear is pretty big.
Well, COD-4 didn´t paint russians as the antagonists...it was russian Ultranationalists, and other russians helped you because they didn´t like em either.
And after a 50 year long struggle and arms-race and near nuclear war, you think that now that the wall fell everything between the participants is hoity toity?
Terrorists/Islamists/Arab people in general excluding Israel.
Communists (most likely russians)
Soviets (always russians, because the Soviet Union apperently didnt span over most of fucking asia...)
Russians (in Post Cold War settings where the Soviet Union doesn´t exist.)
Nazis
Other americans.
So you have russians occupying three slots of these, so the probability of russians to appear is pretty big.
Well, COD-4 didn´t paint russians as the antagonists...it was russian Ultranationalists, and other russians helped you because they didn´t like em either.
And after a 50 year long struggle and arms-race and near nuclear war, you think that now that the wall fell everything between the participants is hoity toity?