David Cadier is a Senior Research Fellow at the Institute for Strategic Research (IRSEM) in Paris. He is also a Visiting Professor at the College of Europe in Bruges and an Associate Researcher and Adjunct Lecturer at Sciences Po Paris. Previously, he held positions at, inter alia, the London School of Economics, SAIS Johns Hopkins University, the University of Groningen, and the Fletcher School of Law and Diplomacy. Angelos Chryssogelos is Reader in Politics and International Relations in the School of Social Sciences and Professions of London Metropolitan University. He holds a PhD from the European University Institute and in the past he has held positions at LSE, King's College London, Harvard, and the Schuman Centre of the EUI. Sandra Destradi holds the Chair of International Relations at the University of Freiburg and she is a DAAD long-term guest professor at Reichman University. She is a PI of the project 'Populism and Foreign Policy' funded by the German Research Foundation (financial assistance is gratefully acknowledged, grant DE 1918/3-1), and she leads the MSCA doctoral network 'International Dimensions and Effects of Populism' (IDEoPOP), funded by the European Union (Project 101168714).