hands down... russia was a key in the whole war. I am russian and as such i have a right to represent my country with best intentions. during the 1940-1945 we lost more than 55million soldiers in combat. with a total loss of 60 mill between he allies i think it is a number that should be considered in the argument. In 1945 russia finlly overtook the Berlin single handed (because rancs fell, uk was trembling and ready to pull out. us was watching from belgium.. so it turns out that the germany as a fascist ountry fell that day because of russia. i hope that clears your question