Russia annexed Crimea and fought an 8-year long proxy war to prevent Ukraine to joining NATO, but that didn't deter Ukraine or NATO. This current direct Russian involvement is an expansion of the war to prevent Ukraine from joining NATO (again). So therefore, to prevent future NATO aspirations, Russia should just end the Zelenskiy regime right now. There should be no reason why Russia needs another "NEXT WAR" to achieve the objectives it set out today, you are repeating the same mistake again expected a different outcome. Just end the regime to have a permanent long-term solution.
Dude, that makes no sense.
1. Did Ukraine Join NATO or at least gotten MAP (membership action plan) in the last 8 years? No.
2. Did "Zelensky Regime" wanted to get into NATO 8 years ago? No.
3. How on earth can "getting rid of Zelensky Regime" do anything to prevent other Ukrainians politicians assuming the role of Zelensky after your Russia gotten rid of him and his regime? Are your Russia going to kill off all Ukrainian politicians except for the pro-Russia hardliners? Do you think that's even possible?
4. If Ukraine didn't join NATO in the last 8 year, nor did it even gotten a MAP, what make you think after this current war, Ukraine can just be a NATO member all of sudden, before Russian can react with another war? The only way this happens is if Ukraine can defeat Russia in the battle field, and got no land loss and even gotten Crimea back. Do you really think there is a high enough possibility for this happen to warrant a discussion about it?
5. As for this current war in Ukraine, even though Russia is winning, it should be very clear now that at the current Russian strength level, they don't have a good change securing and annexing all of Eastern Ukraine (East of Dnieper River) without dragging on the war longer than they can afford.