Trump’s unhinged proposal to take Gaza, “relocate” more than a million starving people to an unspecified locale, and turn their bombed homes into a resort for the wealthy didn’t go over well. Following his threats to Colombia, Panama, Mexico, Canada, Denmark, and Greenland, the civilized world is aghast at the madman at the helm, and has learned a new lesson: that America betrays her allies. It is a dangerous lesson from which the US may never recover.