Hard to say, maybe Poroshenko's gang will be finished in another revolution as the Tymoshenko's one earlier. Problem is that neocons are willing to continue their support for Kiev and affilated national extremists. Their history revisionism and whitewashing of nazi collaborators is extremely dangerous for futer generation so change should be done as fast as possible.

Definitely I think Donbass will remain as breakaway region similar to Transnistria or Abkhazia, probably for decades.