Mark Fitzpatrick is Director of the Non-Proliferation and Disarmament Programme at the International Institute for Strategic Studies (IISS) in London. His IISS program focuses on proliferation challenges posed by Iran, North Korea, Syria and other outlier states, and on nuclear security and nuclear disarmament issues. He is the author of Overcoming Pakistan’s Nuclear Dangers (2014) and The Iranian Nuclear Crisis: Avoiding worst-case outcomes (2008). He is also the editor of six IISS Strategic Dossiers on countries and regions of proliferation concern, most recently on North Korea (July 2011) and Iran (February 2011). He has lectured throughout the world and is a frequent media commentator on proliferation topics. Fitzpatrick joined IISS in October 2005 after a 26-year career in the US Department of State, including as Deputy Assistant Secretary for Non-Proliferation (acting). His diplomatic postings also included Vienna, in charge of liaison with the International Atomic Energy Agency, as well as postings in Seoul, Tokyo (twice) and Wellington. He earned a Master’s degree in Public Policy from the Kennedy School of Government at Harvard University, and he attended a one-year post-graduate study program (1990-1991) at the Japanese National Institute of Defence, where his dissertation on Korean unification was published in journals in Japan and South Korea.