It is a truth universally acknowledged that a foreign policy community in possession of great power must be in want of peace of mind. Climate change, the Middle East, terrorism, trade, nonproliferation—there is never a shortage of issues and areas for those who work in international relations to fret about. If you were to flip through the back issues of Foreign Affairs, you would find very few essays proclaiming that policymakers had permanently sorted out a problem. Even after the Cold War ended peacefully, these pages were full of heated debate about civilizations clashing.
It is therefore all too easy to dismiss the current angst over U.S. President Donald Trump as the latest hymn from the Church of Perpetual Worry. This is hardly the first time observers have questioned the viability of a U.S.-led global order. The peril to the West was never greater than when