Mark Fitzpatrick's research focus includes nuclear proliferation concerns and preventing nuclear danger in the emerging "nuclear renaissance". He has written articles on non-proliferation in the Financial Times, International Herald Tribune, Survival, and other publications. He has lectured throughout Europe, North America and Asia and is a frequent commentator on proliferation and disarmament topics on BBC, NPR and other news outlets. Fitzpatrick served in the US Department of State for 26 years. In his last posting, he served as Deputy Assistant Secretary for Non-proliferation (acting), responsible for policies to address the proliferation problems posed by Iran, North Korea, Libya, Iraq, South Asia and other regions of concern. In previous State Department postings, he headed the South Asia Regional Affairs Office, responsible for non-proliferation and security policies regarding India and Pakistan; served as special assistant to Deputy Secretary Strobe Talbott; headed the Political-Military Branch of the US Embassy in Tokyo; served as North Korea desk officer; and held postings in South Korea and New Zealand. Mr. Fitzpatrick received a Master in Public Policy from the Kennedy School of Government at Harvard University, and joined officers of the Japanese Self Defense Forces in a one-year post-graduate study program at the Japanese National Institute of Defense, where his dissertation on Korean unification was published in journals in Japan and South Korea.