Trump Is Risking a Global Catastrophe

Donald Trump has a lot of odd fixations, both as a person and as a president. He tends to focus his tunnel vision on things he wants: the demolishing of the White House’s East Wing, the renaming of the Gulf of Mexico. Many of Trump’s quirks are harmless, if unpleasant. (He seems to hate dogs, for example, but no one is forcing him to adopt one.) Some of his ideas, however, are more destructive: His stubborn and ill-informed attachment to tariffs has brought about considerable disorder in the international economy and hurt many of the American industries they were supposed to protect.