European politicians and policy makers have begun to feel they’re watching a horror movie: the tale of an American administration with a split personality as sinister as Dr. Jekyll and Mr. Hyde-the first perfectly reasonable and sociable, the other monstrous, unable, and unwilling to control its impulses. And all this as the very existence of the European Union and the credibility of NATO hang in the balance with far-right populists like Geert Wilders in the Netherlands and Marine Le Pen in France potentially set to gain enormous power through upcoming elections.