During the Cold War, the fear of nuclear war suffused the culture in hundreds of books and movies, in classroom "duck and cover" drills and in debates on college campuses, and in the arena of international relations. But that cultural awareness has faded over the past 30 years -- until now. As Russia's war in Ukraine grinds on, the possibility, however remote, of a nuclear exchange is more front of mind that it has been in decades. In this episode, national security expert Joe Cirincione, who has spent 40 years working on non-proliferation, discusses why the world may be closer to a nuclear crisis now than at any time since the Cold War. Calling Dr. Strangelove!