Julia Macdonald is a PhD candidate in political science at the George Washington University and a predoctoral research fellow with the Managing the Atom Project and International Security Program at Harvard Kennedy School’s Belfer Center for Science and International Affairs. She previously held a Stanton Nuclear Security predoctoral fellowship at MIT. Julia’s dissertation research lies at the intersection of coercive diplomacy and foreign policy decision making and investigates the importance of leadership beliefs in shaping assessments of threat credibility during international crises. Her broader research interests include nuclear politics, civil-military relations, and U.S. national security policy. Her work has appeared in the Journal of Conflict Resolution, Journal of Strategic Studies, Foreign Policy Analysis, and Armed Forces and Society, as well as in various policy outlets. She holds an M.A. (Hons) in International Relations from the University of Chicago and a B.A. (Hons) from the University of Canterbury, New Zealand. Julia is an adjunct research fellow with the RAND Corporation and previously worked for the New Zealand Ministry of Defense.