White U.S.-Russia relations may got through some bumpy moments, particularly vis-a-vis the War on Terror, it can't return to the Cold War for two reasons. 1) The Russians would have to voluntarily return to communism and too many Russians don't want to live under that sort of control again. 2) Russians have transfered (poorly but definitely) into a capitalist society.
I just don't see them going back to their old ways now that they have so many new freedoms. Surely they understand that a return to communism (as much as the libs would celebrate it) is a death sentence on their country.
Russia doesn't have to go back to Communism to play another Cold War. The only thing they need are dictatorship, Neo-Nazi government, and/or diplomacy supporting enemy countries of US.