Hermann Wentker, a Cold War historian, joins Alexandra Bell, CEO of the Bulletin of the Atomic Scientists, Mike Albertson, an arms control expert, and Nathalie Tocci, a European security policy professor. They discuss the imminent expiry of the New START treaty and its potential chaos for nuclear arsenals. The risks of a 'free for all' in nuclear stockpiles are highlighted, alongside challenges posed by states outside the NPT. The guests warn that our choices today could either prevent a return to Cold War tensions or invite increased proliferation.