I may be wrong but personally I wouldn’t worry too much about Russia trying to expand again as they have their hands full just taking care of what they got now. Aside all that I think the next major conflict most likely will not be fought on the battlefield but with subversion as well as biological warfare and I think the last virus scare was just a dry run which didn’t quite go as expected.
Perhaps the next one may be designed to be a little more selective. We live in a crazy world which becomes crazier by the day, resmbling a powder keg it is just a question where, when and who will touch off the fuse.
they aren’t worried about Russia expanding..they are worried about about Russia winning then making good on it’s promise of consequences to countries that sent arms to Ukraine.