And who (what country) would do it from your point of view?
1. Israel? It would mean the end of Israel.
2. The USA? It would mean WW3.
3. The UK? As a result excatly the same things would happen with the British military bases, aircrafts, warships.
Because, you tiresome, whining wretch, your scenario postulated a lunatic Russian leader, who commits acts of war against nations with allies. The answer is-everyone.
The subtext of your puerile drivel was that the mighty slimebag Putin should be kept in power because the possible successors are so bad they might be stupid enough to start something.
Frankly, no. He is a proven criminal and war criminal himself.