In this episode, Matthew Evangelista discusses his recent International Security article, “A ‘Nuclear Umbrella’ for Ukraine? Precedents and Possibilities for Postwar European Security.” How can Ukraine and Europe deter further Russian aggression after the Russo-Ukrainian war ends? The...

In this episode, we explore when and why states reveal their clandestine military capabilities. Specifically, we discuss the role of the private sector in helping to develop and conceal such capabilities. Under what conditions do states benefit from revealing their clandestine military...

In this episode, we examine the rise and demise of radiological weapons programs in the United States and the Soviet Union in the 1940s and 1950s. In particular, we discuss how this underexplored history informs the pursuit of radiological weapons by state actors today. What are radiological...