but because Ukraine had ousted pro-Russian president
How do you deal with such people?
These Papuans, with their cargo cult of Westernism, decided that what makes you "civilized" is the ability to do whatever you want - whenever you want.
They sorta skipped the part where in long established Western democracies people grit their teeth and bear the results until the next election - and then effect the desired change through the ballot box.
They instead began to pray at the altar of the perpetual Maidan.
That's fine if you live in a spherical vacuum and your choices don't affect anyone but yourself.
But you can't take $15B from Russia, and sign a naval base lease agreement - then turn around and change your mind and abrogate it the next day like a three year old child. These sort of decisions will have consequences - consequences you should have thought about beforehand.
When your economy is destroyed, your power plants leveled, and half your population gone - it's too late to moan about - "we didn't think the Russians would go so far". That's your mistake for thinking we were "done", and you can simply ignore us.
Aboriginals - with no business having a state of their own.