The Trump administration’s hostility to long-time allies threatens to leave the U.S. alone while dealing with rivalries against countries like China and Russia. There is no reason for NATO to cut ties with Trump; the alliance would hurt more than the U.S. Canada is already pursuing trade deals with China, despite previously hostile rhetoric, because China is “more predictable” than the U.S. On the other hand, Russia, China and other powers might decide to expand their borders should the U.S. step back from its alliances. The Trump administration’s hostility could potentially jeopardize American national security more than not owning Greenland ever could.