I think the West is succeeding so far at crashing Putin's Russia. There is no perfect solution in this situation (unless you think a global war is one). The real (I am very tempted to say "final" referring to Putin specifically; well, I just said it) solution has to come from within. I wrote here:

https://alexeisorokinstories.medium.com/this-simple-not-so-simple-thing-needs-to-happen-for-putins-regime-to-fall-apart-37e5c601b8a4