Take that one step further and look where these countries are in relation to the opposing superpower - let alone taking into account their resources and strategic importance (Sebastapol) - and why on earth are we surprised that Russia has done anything less than they have?
Because it's choosing to be enemies with the West instead of getting along in the way that other European countries have chosen to do after all the destructive wars they've been involved in with each other over the last N hundred years. After all they sit directly on each others borders too and killed each other in the millions and now you find them in the same economic club.