From 2002 to 2008, he was a member of the core faculty in the Security Studies Program, where he also served as Director of Graduate Studies for the last three years of that term. Dr. Barth was awarded a National Science Foundation post-doctoral fellowship (2000 to 2002) and taught in the Science, Technology, and International Affairs (STIA) program at the School of Foreign Service. He also worked as an Analyst in Science and Technology Policy for the Congressional Research Service and as a Mirzayan Fellow at the National Academy of Sciences. Dr. Barth's current research focuses on the causes and consequences of nuclear proliferation, with a particular emphasis on Iran. He has also begun to investigate the nuclear aspirations of the Gulf States.