Mark Phythian is professor of Politics in the School of History, Politics & International Relations at the University of Leicester. He is the author or editor of some fifteen books on intelligence and security topics, as well as numerous journal articles and book chapters. He is the co-editor of Intelligence and National Security, one of the editors of the Georgetown Studies in the History of Intelligence book series, and a Fellow of the UK Academy of Social Sciences. Rubén Arcos is a senior lecturer in communication sciences at the University Rey Juan Carlos in Madrid, Spain. He is program co-chair of the Intelligence Studies Section at the International Studies Association. Arcos is a researcher in the project EU-HYBNET – Empowering a Pan-European Network to Counter Hybrid Threats. He is co-editor of the two volumes of The Art of Intelligence: Simulations, Exercises, and Games. He serves in the editorial advisory board of the International Journal of Intelligence and Counterintelligence. Nicole K. Drumhiller serves as the Associate Dean for the School of Security and Global Studies at the American Public University System. Her published works cover topics such as intelligence, security studies, and political psychology. She serves on the editorial advisory board of the Global Security and Intelligence Studies journal.