If Russia takes the entire East/Left Bank of the Dnieper, then Poland will claim the entire West/Right Bank as part of a restored Greater Polish/Lithuanian Commonwealth, which could also claim all of Belarus. Once one nation can expand its borders by invasion and force of arms, anyone else can, and in fact must to keep the aggresor out and away from its heartland. Putin has already offered such a partition to Poland. Also remember that Putin is still holding the wreckage of Poland’s Air Force One and refused to return it after shooting it down. NATO chose to ignore that.
(Also remember that Putin is still holding the wreckage of Poland’s Air Force One and refused to return it after shooting it down.)
I had forgotten that.