Well, Ukraine. Or, rather, Right-wing nationalist Galacians who trapped dozens of Ukrainian union members who were the wrong kind of Ukrainian in a building them threw firebombs in until all the Ukrianians in the building burned to death.
Then the nationalist Galacians attacked the legitimate president, who had considerable support in eastern Ukraine.
Then the coup Rada started sending Nazi death squads in to Donbas, and shelled Donbass with artillery for like eight years.
Then the UA military staged a massive build up to invade Donbas with... uh... questionable intentions towards the Russian speaking Ukrainian population, and at that point Russia invaded.
So.