He knows his days are numbered. His psychosis has only increased. If we push him to the brink-- watch out! What does he have to lose?
He has delusions of grandeur. Remember Major Kong (Slim Pickens) in Dr. Strangelove, who strapped himself to a nuke, and hooted and hollered as he approached his target. Putin is crazy enough to use nukes, and wouldn't he like to go out in a blaze of glory?
We keep ramping up the armaments in the war and are heading towards a horrific outcome. Ukraine is not worth the risk when you're dealing with a madman.