Ukraine could end up permanently divvied up in the future, with the Russian regions annexed by Moscow, either formally or de-facto, while the rest of the country, which naturally tilts more to the West, admitted to the European Union and NATO. That's a best-case scenario rather than a likely scenario. Ukraine in its current borders, though, surely won't be admitted to the European Union or NATO, at least not before the Russian Federation liberalizes dramatically, because too many people in its political class are volunteer tools of Moscow.

Pity the Vassals of Moscow (4 March 2014)