> Install anyone else that's not insane, say Navalny.
Well, we definitely couldn't install anyone. We'd have to administrate an open election.
> I read they have 50% of their total combat brigades in Ukraine now.
This is a pretty antiquated assessment of military power. Boots on the ground show only that Russia wants to take Ukraine rather than completely destroy it. They can level the entire country with tactical nukes if they want.
> Installing a leader that is open to integrating with the west, along with India, we could encircle China and force them into peaceful deescalation.
I think it's more likely that we'd make China very dangerous and hostile, and we'd also re-open the world to the possibility of foreign regime change.
If we can decapitate Russia, why couldn't someone say, "Hey, this Biden guy stole the election, we should murder him for the good of the American people!"
Biden didn't steal the election, but I think you see where I'm going with it.