Matteo C.M. Casiraghi is Assistant Professor of International Relations at the University of Groningen, the Netherlands. Previously, he was a Marie Sk¿odowska-Curie Global Fellow at the University of Warwick, UK, and the University of Denver, USA. He has published articles in the Journal of Peace Research, the European Journal of Political Research, and West European Politics, amongst others. Eugenio Cusumano is Associate Professor of Political Science at the University of Messina, Italy, and Assistant Professor (on leave) at the University of Leiden, the Netherlands. He was previously a Marie Sk¿odowska-Curie Global Fellow at the University of Venice, Italy, and the University of Queensland, Australia, and a Fulbright Scholar at the Korbel School of International Studies, Denver, USA. He has published over 30 journal articles and two monographs on non-state actors' role in international security and has collaborated with the International Organization of Migration, the NATO Centre of Excellence on Civil-Military Cooperation, and the EU Centre of Excellence on Hybrid Threats.
