Pick whatever non-NATO source.
He will be putin a coffin
He would die.
During his next public speech, you’d notice that his eyebrows are slightly bushier, his voice is slightly deeper, and he’s suddenly an inch taller.
"Doppelgangers! Listen!
There is a good news and a bad news for you this morning.
The good news is: Our Great Leader has survived the dangerous attack last night.
The other news is: He has lost his right arm. "
No matter who actually did it. Russia would blame Ukraine/NATO/USA/The West in general, together and separately in rotation.
After that I have no real idea, who would succeed. There would be a massive power struggle both in the government and military.
There is a strong possibility that several of the autonomous regions within the Russian federation would try to break away. There is about a 20% chance of a civil war because of this.
And about a 1% chance of nukes being used.
Well Ukraine is on the table as a non-NATO source and obvious contender given the war.
Ukraine would do it with the help of several other Western nations. A definite team effort!
Currently, there is no other really powerful figure next to him.
Therefore a giant power vacuum emerges.
The war would stop, probably very soon. But then the situation gets chaotic and unpredictable.
I’d wager the war goes from internal, to internal civil war, if Putin dies, as various power blocks try either secure their own positions/power, or reach for more.
assuming they didnt try to blame the west, which then things get far more worse for NATO states, and possibly hot
Yeah I’d imagine the troops in Ukraine would be pulled back into Russia largely to secure someone’s position in their upper ranks, with only enough to maintain defensive positions in Ukraine. If Ukraine broke through during this period it’d probably be over while Russia is distracted with internal issues.