NATO was created to fight against Soviet Union/Russia so I don’t think that this will be a case. Long time ago Putin they’ve asked him about it in the interview and replied that he asked Clinton (I think) and he just laughed.

No one knew his plans for a fact but since NATO betrayed him multiple times and growing up in the SU he probably romanticized it a lot which eventually created this situation.

If everyone is in NATO who are they gonna be fighting against then?