If you belong to a small country that is geopolitically not that important, or strategically not that important, you have no place among nations. Those countries are neglected and left to fend for themselves.
If NATO troops walk in Crimea, they will immediately deploy their forces there. Such a move would be geopolitically sensitive for us because, in this case, Russia would be practically ousted from the Black Sea area. We'd be left with just a small coastline of 450 or 600km, and that's it!