Yep. And also, about Krimea, there is this game of musical chairs: once the music stop everyone gets its chair but one. Some seem to consider that after WWII and Yalta, no border should ever change anymore. That's not fair, not natural, and too rigid. If no borders are ever modifed, will the Kurds never have their own country as maybe they ought to?

To me border moves are always painful, dangerous, need to be done carefully, etc. but not allowing them at all is worse: the pain and danger accumulates and after a while, we get earthquakes sized changes.