In Ukraine's case, Russia has taken a sizable chunk of their territory. If they hadnt given up their nukes it would be a whole different story.
I gotta mostly disagree, man.
One) many thousands of Russians were already in the Crimea at the time of the referendum (at the Sevastopol Naval base). And the Crimeans - by over 90% - voted to leave Ukraine. The Russians did nothing but stop Kiev from starting a civil war to try and stop Crimea from lawfully leaving.
And I don't care what Ukraine's silly 'you-have-to-get-permission-from-the -rest-of-Ukraine-to-leave' law says. If a major region votes over 90% to leave - they should be allowed to leave. Russia just prevented the mess that is happening in the Donetsk Region. I don't think nukes would have made any difference as the Russian troops were already there - unless Kiev lost it's mind and started nuking Russia or the Crimea in retaliation.
Two) the Donetsk region might have been a different story. But somehow I don't think Putin would have backed down just because Ukraine had a few nukes. Again, I think they would have helped the Donetsk Region just as much as they have...as their aid has been far less direct then it was in the Crimea.
But maybe you are right about this region.
And, once again for the record, I fully support what Russia is doing in both those regions (from what I know) - though I hardly think their motives are sweet and kind.
Both regions voted well over 90% to leave the Ukraine. ANd both times Kiev was willing to kill their own people rather than let them leave. The latter is totally wrong and I fully support the right of major regions to determine their own sovereignty...whether that region is Crimea, Donetsk Region, Texas, West Bank/Gaza Strip, Quebec or any other major region.
Heck, in Canada, they only require a roughly 2/3'rd's vote for a province to leave (with some other stipulations).