Klaus Brummer holds the Chair of International Relations at the Catholic University of Eichstätt-Ingolstadt, Germany. He served as co-editor-in-chief of the ISA journal Foreign Policy Analysis and was the 2021/22 DAAD Hannah Arendt Visiting Chair for German and European Studies at the Munk School of Global Affairs and Public Policy, University of Toronto. He is the co-editor of States and their Nationals Abroad: Support, Co-Opt, Repress (Cambridge University Press, 2025).