United States carved Korea into two separate states with Soviet Union (Two White imperialist powers) after 1945 Japanese defeat.
Lol, you make it sound as if they both somehow agreed too partition Korea and not that the Koreans decided to go communist out of their own volition just to have MacArthur invade the South and put a puppet regime made out of fascist Japanese collaborators, while also killing 20% of the North's population and mass murdering political dissidents in the South.
And last time I checked, CPC participated in that war too. Does that mean they are complicit of the USSR's "white imperialism"?.
Heck, the Soviet Union proposed the unification of Germany from the start under the conditions of complete disarmament, denazification and neutrality. Guess who refused while filling the West German government and NATO with former Nazis?
Meanwhile, Austria who got equally partitioned, got unified in 1955 because it was less strategically important and the Anglos didn't care about it.