I suspect should an entry happen it will be from the south to settle any scores there first and if from the south they may move .... I know not if to the north they shall go. putin (imho) knows most of his problem is in the north. putin might open a can of worms he will not be able to ever containerize ever. putin maybe is simply thinking worms ... fishing trip. Not certain with former kgb.
my apology for saying former kgb ... putin was and is never former kgb.