Mark Castillo is Program Coordinator for the University of Pennsylvania’s International Relations Program, College of Arts and Sciences. In addition to his regular duties of Program administration and student advising, he also serves as Senior Liaison Officer to over 150 colleges and universities that host chapters of Sigma Iota Rho, the National Honor Society for International Studies, which is based in the IR Program. Mr. Castillo’s intellectual interests lie in intelligence studies and political history, specifically the historical interaction between American and British intelligence services and the open societies they serve. Before coming to Penn, he earned two postgraduate degrees in the United Kingdom, from the University of Edinburgh and War Studies Department of King’s College London. Alongside Frank Plantan, he has co-taught several offerings of "Counterintelligence." This academic year, he will be teaching INTR-290-602, “Secret Intelligence in American Democracy, 1776 to Present.”