On April 30, International Jazz Day celebrated a music of freedom. Washington should see it as power. During the Cold War, the United States used jazz to outmaneuver Soviet propaganda and win hearts and minds without firing a shot. It worked. Today, as global competition sharpens, America is sidelining one of its most effective tools of influence. It is past time for the United States to bring music back into its diplomatic repertoire, stop missing the beat and reclaim its cultural cadence.