In this special episode, ASPI Executive Director Justin Bassi speaks to Lisa Curtis, senior fellow and director of the Indo-Pacific security program at the Center for a New American Security and former senior director for South and Central Asia on the US National Security Council, and Bec Shrimpton, director of ASPI’s Sydney Dialogue and a former senior adviser to an Australian foreign minister and minister for women. They discuss deterrence—what it is, how it works, whether we have or lack it—and how the US and Australia can work together to achieve their deterrence goals.