Here are a couple of definitions that could be apropos to the future of our country and possible destruction of what has been a constitutional republic. In fact, a study shows that the American government is basically an oligarchy. [NOTE: An oligarchy is a system where power is effectively wielded by a small number of individuals defined by their status called oligarchs. Members of the oligarchy are the rich, the well connected and the politically powerful, as well as particularly well-placed individuals in institutions like banking and finance or the military.]
Megalomaniac: The megalomaniac differs from the narcissist by the fact that he or she wishes to be powerful rather than charming, and seeks to be feared rather than loved. To this type belong many lunatics.
Megalomania: a psychopathological disorder resulting from delusions of magnificence, grandeur, or omnipotent power … usually, but not limited in the interests of money or other wealth.
Three prominent and infamous people include Hitler, Saddam Hussein, and bin Laden. In addition to all his evil and insane acts AH was responsible for the ultimate destruction of his adopted country. (One must remember that Hitler was a native of Austria, not Germany.) Same for SH.
Usama bin Mohammed bin Awad bin Laden was the founder of al-Qaeda and subsequent attacks on the USA. That triggered wars that seem to be never-ending.