A perfect storm is brewing in the Atlantic. In personality and in style, Mr. Trump represents almost everything Europeans dislike most about American life. He is even more abrasive when it comes to matters of substance. The Trumpian mix of zero-sum trade policy, hard-nosed foreign-policy realism, and skepticism about Europe’s future leads him to think of Europe as both a weak partner and an unreliable one. Small wonder, then, that virtually every encounter between Mr. Trump and his European counterparts leaves the relationship under greater strain.

Walter Russel Mead Why Trump Clashes With Europe