Trump as an outsider does not know the requirements of jobs and therefore can’t match available qualified people. He needs tips. He gets them from the wrong people like Turtle, Linda, and early on McCain sent him McMaster and the Generals. Don also picks some “beauties” on his own: Scaramucci, Amorosa, Bolton (against much advice), Jared, Rudy. The current Defense Secretary Hedge Fund manager Mnuchin is real bad. I don’t know who sent him. Possibly Putin? Kim Jong-Un? He disagrees radically with Trump in public and departs from Trump orthodoxy every time he turns around. Needs to walk the plank.
Trump was wiling to fire Bolton, apparently because he got prickly and snarly when Trump wouldn’t take his advice.
If resisters are more diplomatic about it he seems reluctant to fire them.
Sorry I got Mnuchin mixed up with Esper, another dweeb.
Trump has been ill served by the people who should work for his programs and be loyal, yes, to him personally and keep their f’g pie holes shut. It has always been thus.