The USSR never really broke up. Have a look at Putin and how fast his “Eurasian Union” came together.
Short of extermination or displacement of a whole populace, no country ever quite ‘goes away’. The Russian Federation and its clients are a very different animal that the Soviet Union and Warsaw Pact. They did get rid of much of their dead wood and dead end economy, and so must we at some point.
We even have a recommendation to that effect:
“Governments are instituted among Men, deriving their just powers from the consent of the governed, that whenever any Form of Government becomes destructive of these ends, it is the Right of the people to alter or abolish it, and to institute new Government laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their safety and Happiness.”