Dr. Hassan Abbas is a Senior Advisor and Bernard Schwartz Fellow at Asia Society and Professor of International Security Studies at National Defense University's College of International Security Affairs. He is currently also a non-resident fellow at the Institute for Social Policy and Understanding. He remained a Senior Advisor at the Belfer Center for Science and International Affairs at the Kennedy School of Government, Harvard University (2009-2011), after having been a Research Fellow at the Center from 2005-2009. He was the Distinguished Quaid-i-Azam Chair Professor at Columbia University before joining CISA and has previously held fellowships at Harvard Law School and Asia Society in New York. Hassan received his Ph.D. from the Fletcher School of Law and Diplomacy, Tufts University and an LL.M. in International Law from Nottingham University, UK, where he was a Britannia Chevening Scholar (1999). Hassan also remained a visiting fellow at the Islamic Legal Studies Program at Harvard Law School (2002–2003) and as a visiting scholar at the Harvard Law School's Program on Negotiation (2003–2004). His research interests are nuclear proliferation, religious extremism in South and Central Asia, and relations between Muslims and the West. Hassan is a former Pakistani government official who served in the administrations of Prime Minister Benazir Bhutto (1995–1996) and President Pervez Musharraf (1999–2000).