Payam Ghalehdar joined the Centre for International Security of the Hertie School as a research fellow in 2020 and began teaching at the Hertie School in the academic year 2022/23. He was previously a Postdoctoral Fellow at the Henry A. Kissinger Center for Global Affairs of the Johns Hopkins University School of Advanced International Studies (SAIS) in 2021/22. From 2017-2019, he was a Postdoctoral Research Fellow with the International Security Program at the Harvard Kennedy School’s Belfer Center for Science and International Affairs. He obtained his PhD from the European University Institute. His research interests span US foreign policy, military intervention, and the role of emotions in foreign policy decision-making. His book The Origins of Overthrow: How Emotional Frustration Shapes US Regime Change Interventions was published with Oxford University Press in 2021.