Ruger is teaching a section of Topics in Global Policy Studies titled Counter-Insurgency & Counter-Terrorism, which focuses on the theory and practice of terrorism/counterterrorism (CT) and insurgency/counterinsurgency (COIN). Ruger is a Research Fellow in Foreign Policy Studies and an Assistant Professor in the Department of Political Science at Texas State University. Ruger is an expert on international relations, U.S. foreign policy, and civil-military relations. He is a veteran of the Afghanistan War. Ruger is also the co-author of Freedom in the 50 States and the book review editor for Armed Forces and Society. His academic interests include International Politics, Security Studies, Civil-Military Relations, U.S. Foreign Policy, Ethics and International Relations, and Political Theory.