So he has tantrums, eh?
That descriptor has been used often with regard to his outbursts. It is a special word, reserved for nearly-violent or violent actions taken by severely acutely disturbed individuals. Now I myself am a volatile person at times when under extreme stress. I inherited my mother’s anger Gene, but I can only recall three or four times in my adult lifetime that I had behaved in a fashion which could remotely be described as a tantrum.
More and more his behavior can be described as Hitlerian And his retreat to the bunker, while a wonderful literary metaphor, remarkably parallels the actions and behavior of the Dictator. I believe that he operates on such a primitive level that books about Hitler imprinted in his brain, and directly affect his behavior without his consciousness perceiving it as such. He is dissociated from reality, and is, like the coronavirus, becoming exponentially worse. I have come to the conclusion that he has internalized Hitler and the Third Reich and may see himself as the alter ego, or even The chosen mechanism of the reincarnation of that evil. For some comparison, when I was young I idolized certain movie actors’ film roles such as Paul Newman‘s, because he was insightful, smart, cool, and tongue-in-cheek debonair. This guy idolized the conquerors and the fascists and saw the “advantages” in being a criminal, Associating with the criminal element, and building an empire albeit as false an empire as the movie set of the film Cleopatra.
The level of mental and emotional pathology is extraordinary.
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He's a tweaker. 
Dust off your books about the last throes of the Third Reich.
This will also explain the behavior of the people closest to him as well as the GOP.
The Nazi party became more dangerous after it was crystal clear the war was lost. And the rest of the total destruction of that country was utterly senseless, but it was on purpose.
