that these rants are not examples of his dementia, although he's got that,, too.
I think that this might be what psychologists call "decompensation." In plain language, a mental breakdown. He has spent his entire life reinforcing psychological armor to protect himself from being human (weak, in his abusive father's terms),. He grew up being unable to feel, to make a mistake without being put down and sneered at as a loser by Fred Trump. He could lie, fake strength and courage, con people and project himself as a perpetual winner and that was OK. Just don't show normal human feelings or weakness.
So he never grew into a person with internal strength or identity. He's made himself into an empty shell - a very hard, ruthless shell. He's lied and conned his way through life to reach the top of power as leader of the strongest nation on earth.
If something penetrates that shell, he will crumble like Humpty Dumpty. The Epstein scandal and arrest of Andrew Mountbatten Windsor poses a threat of being exposed.
If it could happen to royalty, what might happen to him? He fears being exposed in front of the whole world now that he's at the pinnacle of power achievement.
Add to that the SC ruling that took away his tariff extortion tool of power To Trump, those tariffs were like a king's scepter to wave and make nations tremble. Sure, he still has some tariff power left, but his freewheeling style of tariff extortion is over. His internal daddy voice is whispering (or maybe shouting) at him, "Loser."
The shell is starting to crack a little. If he can't pull a trick from his sleeve to feel like a powerful winner above everyone again, he will crumble.
If he's desperate enough to protect that shell, he will be dangerous. This is the time for the military to remember what Senator Kelly and 4 other Congress members reminded them of recently, that they are obligated to not obey illegal orders.