Jim Kenney explores the ways in which Donald Trump’s confrontational rhetoric, transactional diplomacy, and threats to withdraw support from NATO and other alliances have strained long-standing U.S. partnerships and alienated once-close allies. He asks what it means for a superpower to “go it alone” with a unilateral foreign policy that sidelines multilateral institutions, shifts security burdens onto allies, and narrows cooperation to short-term deals. Consider the risks of isolation, diminished global influence, and heightened instability when the United States retreats from coalition-building in our interdependent, crisis-prone geopolitical environment.