My instinct is to support secessionist movements, and I see great hypocrisy in the US condemning alleged Russian intervention after their own meddling. On one hand, there are allegations that Ukraine is infested by neo-Nazi nationalists now. On the other hand, I have seen anyone to the political right of (or more libertarian than) Bernie Sanders here in the US summarily dismissed as a "fascist." I don't have enough information to say whether there are any "good guys" in the first place, but I am certain the US has no political authority to meddle again.