Photo: Peter Gerritsen (2022)
Welcome!
I’m Assistant Professor in International Security at the Department of Political Science and Public Administration of Vrije Universiteit Amsterdam. I’m Co-Director of the interdisciplinary Master Program (LLM) Law and Politics of International Security and Chair of the Program Committee for the Bachelor Political Science.
Before joining VU Amsterdam in 2022, I was Interim Franz Haniel Professor for Public Policy and then Visiting Scholar, both at the Willy Brandt School of the University of Erfurt, and Research Associate at the Chair of European and Global Governance at the Munich School of Politics and Public Policy of the Technical University of Munich.
I pursue two complementary lines of research: (1) substantive research on the domestic politics and politicization of international security, and (2) methodological research advancing Qualitative Comparative Analysis (QCA) as a set-theoretic approach to descriptive and causal inference.
My books include Democratic Participation in Armed Conflict: Military Involvement in Kosovo, Afghanistan, and Iraq (Palgrave Macmillan, 2014), which received the Best Dissertation Award of the German Political Science Association, and Qualitative Comparative Analysis: An Introduction to Research Design and Application (Georgetown University Press, 2021), translated into Japanese as 質的比較分析 (QCA): リサーチ・デザインと実践 (Chikura Publishing, 2023). I am also the co-editor of the Routledge Handbook of Foreign Policy Analysis Methods (2023).
I am editorial board member of International Studies Quarterly, Foreign Policy Analysis, and Contemporary Security Policy. In 2025, I was appointed Chair of the Committee on Dissertation Completion Fellowships of the International Studies Association (ISA), for a one-year term. In 2022, I was elected to serve on the Ethics Committee of the German Political Science Association (DVPW) for a five-year term.
This website gives information on my research, teaching, and other professional activities.