The first half of the twentieth century witnessed some of the worst moments in modern history: two world wars, a global depression, tyranny, genocide. That happened largely because the Western great powers hunkered down in the face of economic and geopolitical crisis, turning inward and passing the buck, each hoping that it might somehow escape disaster. But there was nowhere to run or hide, and catastrophe swept over them regardless.
Reflecting on this afterward, Western policymakers swore not to repeat their mistakes and designed a postwar order based on mutually beneficial cooperation rather than self-interested competition. They recognized that foreign policy and international economics could be team sports rather than individual ones. So they linked their countries to one another in international institutions, trade agreements, and military alliances, betting that they would be stronger together. And they were correct: backed by extraordinary American power, the system they created has led to seven decades of progress, great-power peace, and economic growth.
So when Donald Trump chose “America First” as his presidential campaign’s foreign policy slogan, experts were appalled. Didn’t he realize that was the cry of pro-German isolationists who opposed American entry into World War II? Surely, embracing such a discredited position would hurt him, flying as it did in the face of everything U.S. foreign policy had stood for over generations. As usual these days, the experts’ predictions were wrong. But their reasoning was sound, because during his campaign, Trump did indeed offer a perspective on international politics closer to the nationalism and protectionism of the 1930s than to anything seen in the White House since 1945.