Considering how many Russian oligarchs are losing their precious assets in Russia and around the world, it's possible they would consider an assassination. This is what they do in Russia, all you need to do is remember their not-so-discrete assassinations in UK. Also, not every military general and other staff are happy about Russia's war against Ukraine. There is a chance someone might finally act, although I'm not very hopeful.

By the end of the day, Putin is in a bunker far away. And he doesn't allow anyone apart from his family to see him.