The reasons for the immediate action might be logical, but looking at the medium term consequences it breaks down completely in my mind. The only two possibilit

The reasons for the immediate action might be logical, but looking at the medium term consequences it breaks down completely in my mind. The only two possibilities I can see going forward is either a forever-war as in Afghanistan, or a forever-sanction situation like Iran or DPRK. I don't see how any listed benefits would outweigh the costs of either option. It troubles me a lot, because Putin has seemed to me to be a carefully calculating player up until this. It makes me wonder if he has truly lost it. Or if there is some grand plan which this is only a small part of. Both are scary.