Okay, I'm gonna throw something out there, because if you look at the demographics breakdown it's relatively abrupt -- would a two-state solution work? I mean, seriously: half the country aligns with the EU and half with the Soviets, and if I recall correctly from the last map I saw, it's sort of a north/south split. Ethnically and politically. It's not feasible but that doesn't mean it wouldn't work if somehow implemented. EDIT: found the map
I'm not sure, I read an opinion piece in the Guardian that suggests the political divisions might be less clear cut.On the positive side, despite doom-laden forecasts about an east-west split – broadly between those whose first language is Russian and those whose first language is Ukrainian – Ukrainians in both camps have been unanimous in support of independence. Yes, the eastern part of the country may look culturally, economically and in its religious orthodoxy towards Russia, and the mainly Catholic western part, centred in Lviv, towards Poland and Europe, but everyone is more mixed up than this simple division would suggest. More to the point, polls have never shown any appetite, even in the east, either for seceding or – still less – for returning to Russia's administrative embrace.
I'm not sure that's true, though. That article I linked has another map with similar divisions based on voting numbers for the current president and the opposition leader in the last election. They split similarly. Of course there are a lot of other considerations -- who stands to benefit, how would a divide come about, etc. But I think there's evidence that it would be better than the current 'kleptocracy'.