This idea of "self determination"...which country has ever allowed it, especially with a foreign power occupying sovereign land? Incidentally, the USA used this reason to coopt Texas from Mexico after Mexico allowed US citizens to move there if they renounced their US citizenship and pledged loyalty to Mexico.
Doesn't that sound eerily similar to Russia now? Under the Iron Curtain, they had a policy of relocating native Russians to their satellites. Those natives actually ran their satellites. When the curtain fell, those minority Russian populations went back to getting the "power" of a minority. The only surprise now is that Russia seems to be embracing these minorities as a means to expanding territory. Territory is resources, right?