“There is no new USSR”
That’s not what Putin has in store for the world.
https://www.foxnews.com/politics/putin-soviet-union-next-move
Putin: “The fall of the USSR was the greatest geopolitical tragedy of the 20th century”.
Invading his neighbors would be consistent with his expressed USSR sentiment, above.
I’d also point out that every one of those acceptances by NATO followed Russian misbehavior. (To put it mildly.)
Georgia makes a good study.