A fairly random map, somewhat prompted by an old Jack Williamson story (for those who know him from Adam):
It's a world where, thanks to a delayed Soviet bomb project, no Korean war and the Guomindang winning in China, the US is less spooked by the Red Menace, and after some nasty disagreements re European colonial policy, ends up largely withdrawing into isolationism by the mid-50's, from which it would not really emerge until the 70s.
Western Europe survives, but its heavily militarized and poorer society eventually ends up taking a turn to the hard right: by the early 21st century western Europe is more closely integrated than our EC, but one of the things that unifies it is a distinctly racist conception of "Europeanness" which is a bit uncertain as to whether Slavs are really part of the Herrenvolk or not.
The USSR doesn't collapse, but it reaches economic crisis by the late 80s anyway, and has been pursuing painful two-steps-forward-one-step-backward reforms since the early 90's. By the late 90's Soviet forces had largely withdrawn from Eastern Europe and a three-way struggle for influence began that is still ongoing.
China is the fourth Big Power, and is 15-20 years ahead of OTL China in terms of economic development.