Since the end of the Cold War, it has widely been assumed that U.S. foreign policy would follow one of two courses: Either the United States would continue as primary defender of the international order it created after World War II, or it would pull back from overseas commitments, shed global responsibilities, turn inward and begin transitioning to a post- ­American world… It turns out there was a third option: the United States as rogue superpower, neither isolationist nor internationalist, neither withdrawing nor in decline, but active, powerful and entirely out for itself.