If there’s one idea that still commands a broad consensus inside the foreign-policy community, it’s the United States is and should remain the leader of the free world. That view stood front and center during the Clinton, Bush, and Obama years, and it remained largely intact (if somewhat muted) during former U.S. President Donald Trump’s ill-informed and incoherent effort to put “America First.” When U.S. President Joe Biden says “America is back” and his foreign-policy team seeks to unite the world’s democracies against a rising authoritarian tide, these goals reflect the rarely questioned belief that the United States is uniquely positioned to perform this leadership role.
The strongest argument in favor of this view is essentially negative: No other democracy has sufficient economic or military power to exercise decisive “leadership” (however one defines it), and no other democracy really wants the job. But the lack of a plausible alternative isn’t enough: We still need to ask if the United States is presently capable of exercising the role that advocates of U.S. global leadership recommend.
