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 conventional wisdom holds that Ukraine should join NATO to shelter under the U.S. nuclear umbrella. Evangelista challenges this assertion, arguing that nuclear deterrence was never tested during the Cold War. He...

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 capabilities? What role does the defense industry play in helping to maintain states’ military secrets? Compared to the Cold War period, is it becoming more or less difficult to safeguard military secrets?...

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 weapons and how are they different from nuclear weapons? What factors led to the rise and decline of radiological weapons programs in the United States and the Soviet Union? Are radiological weapons a...

In this episode, we explore the politics of technology and the North Korean nuclear crisis. In particular, we focus on how lessons from the 1994 Agreed Framework between the United States and North Korea can be applied to nonproliferation diplomacy today. Why did the 1994 Agreed Framework fail, and what impact did this failure have on U.S.-North Korea relations? What have we learned from these challenges in proliferation crisis diplomacy? Can lessons from the Agreed Framework be applied to...

In this episode, we discuss the lead-up to the Iraq War and how states respond to international pressure regarding weapons of mass destruction (WMD) programs. In particular, we explore the dilemma faced by Iraq from 1991 to 2003 concerning how much to disclose about its past WMD capabilities. What does it mean to have a “cheater’s dilemma”? How does new evidence of this dilemma challenge the conventional wisdom on Iraq’s behavior at the time? Can we apply the concept of a cheater’s dilemma...

In this episode, we explore the politics of alliance relationship management and reputational concerns during international crises. In particular, we focus on the United States, Taiwan, and other partnerships in East Asia. What does it mean to have a reputation for being a “good ally”? Do states always want their partners to be “loyal”? What types of statements and behaviors reassure nervous allies? Where is America’s reputation most on the line in East Asia? Listen to find out!

In this episode, we explore the tension between liberal values and material interests in U.S. foreign policy, as well as examine the inconsistencies of Western-led democracy promotion. Does the United States truly prioritize democracy promotion in its foreign policy? How does the United States’ definition of democracy influence its democracy promotion efforts abroad? Does the West’s failure to intervene in the current protests in Belarus represent a departure from Wilsonian ideals? Listen...

In this episode, we address the current state of civil-military relations in the United States, explore the paradoxes of having an “apolitical” military as envisioned by Samuel Huntington, and contemplate the future of civil-military relations. Are civil-military relations really in crisis in the United States today? If existing norms are not working, what should the norms and practices of civil-military relations be? What role should retired military officers play in government and public...

In this episode, we examine the history of great power politics in the Middle East and the Arab-Israeli conflict, with a focus on the period of détente between Washington and Moscow during the Cold War. We then assess major power relations in the region today and possible future trends. Why did great power détente fail in the Middle East, and what impact did this failure have on the Arab-Israeli conflict and Israeli-Palestinian peace process? Can lessons from the Cold War period of détente...

In this episode, we examine the U.S. electoral calendar’s impact on military strategy during the Iraq War. How did U.S. electoral considerations impact military decisions at the presidential level, such as the 2007 surge and the 2011 withdrawal of U.S. troops from Iraq? In what ways did these considerations interact with local conditions on the ground and Iraqi domestic politics? Will the current U.S. electoral cycle influence foreign policy decision-making regarding Iraq and the Middle...

In this episode, we examine Chinese views on the likelihood of nuclear escalation in the event of a crisis or armed conflict with the United States. How do Chinese and American views on nuclear use differ? Under what circumstances could nuclear escalation arise? How can both countries avoid inadvertent escalation? Listen to find out!

In this episode, we examine how refugee return can upset post-conflict stability and lead to renewed conflict at home. While our conversation touches upon numerous cases of conflict-induced migration, our analysis zeroes in on post-conflict Burundi. How do post-conflict societies respond to refugee return? Under what conditions do tensions between those who stayed and those who left become violent? What can local and international actors do to mitigate the risks of renewed conflict once...

In this episode, we examine how and when international criminal tribunals deter wartime atrocities. Our discussion analyzes the past, present, and future of international criminal tribunals, with specific reference to the International Criminal Tribunal for the former Yugoslavia and NATO intervention in the Balkans. Was the international criminal tribunal able to deter wartime atrocities in the former Yugoslavia? How did NATO’s intervention change the calculus of all parties on the ground?...

In this episode, we examine when and how domestic politics can influence a state’s nuclear choices and, in particular, when a country’s leaders choose to expand nuclear decision-making to those outside of their inner circle. Our policy discussion focuses on the impact of Iranian and American domestic politics on the past, present, and future of the Iran nuclear deal. Who are the main factions and decision makers driving the two countries’ respective policies? What is the current state of the...

In this episode, we discuss the interesting history and legacy of the debate inside the Clinton Administration on how to enlarge NATO. Twenty-five years ago, supporters of a relatively swift conferral of full NATO membership to a narrow range of countries outmaneuvered proponents of a slower, phased conferral of limited membership to a wide range of states. What was at stake in this debate and why did “swift conferral” win the day? What were the main drivers, and who were the key...

International Security author, Michael Mousseau, presents a provocative argument: A powerful liberal global hierarchy is slowly, but systematically, moving the world toward perpetual peace. The conversation is joined by Graham Allison for a spirited debate about the liberal foundations of war and peace. Is the “end of war” possible? What would such a world look like? What does this mean for increasing tension between the United States and a rising China? Listen to find out!

Chinese behavior in the South China Sea is carefully balanced between the need to establish resolve and the economic cost of coercion. When does Beijing use military force in its maritime disputes? What other types of non-military coercion does China employ in the South China Sea? How has the United States responded to Chinese maritime policy, and how are American policies viewed by its partners in the region? Listen to find out!

States are increasingly able to weaponize their centralized positions within global informational and economic networks for strategic purposes. Contrary to traditional arguments that globalization and economic interdependence will lead to increasing international cooperation, this episode discusses how states can leverage global networks to engage in coercion. The episode discusses broader trends as they relate to global sanctions, the relationship between foreign policy and private sector...