Monika Sus is an Associate Professor of Political Science at the Polish Academy of Sciences. She is also a part-time professor at the Robert Schuman Centre for Advanced Studies at the European University Institute, where she co-leads the EU Security Initiative, and an adjunct faculty member at the Hertie School in Berlin. Her research focuses on international relations, particularly the institutional dynamics of overlapping security regimes in Europe, including the EU-UK security and defence cooperation and inter-organisational cooperation between the EU and NATO. She has published in leading journals including International Affairs, West European Politics, Journal of Common Market Studies, Contemporary Security Policy and The British Journal of Politics & International Relations.