Without a doubt, he is totally divorced from reality and clinically insane...from a Narcissistic Personality Disorder perspective
However, that isn't the worst of it.
There are supposed Americans (debatable that they are true Americans of course), that are actually happy about his attempt to destabilize this country...and send it into chaos and anarchy.
They are too ignorant to understand that should that happen, nature abhors a vacuum...and that is how dictators/despots come to power.