[noselasd]

It all depends on your point of view - the russian point of view is that nato controlled crimea is much more unwanted, and would and leave them much more cornered compared to nato controlled Odessa and Mykolaiv (and that point shouldn't be too hard to realize by looking at the map). And they wanted to keep their naval base there, which they now can.

Romania, Bulgaria doesn't border Russia , Turkey is not on the land border and they have decent relations with them. But sure, they're likely not happy with that either - they just can't and will not do anything about it. With Crimea/Ukraine - they could.