Dr. Elizabeth (Libby) Turpen is currently the President of Octant Associates, LLC, and an adjunct at the Institute for Defense Analyses. Prior to co-founding Octant, she worked at Booz Allen Hamilton where she provided WMD policy, strategic planning, and technical expertise to clients at DHS, DOE and DOD. Previously, Libby was a Senior Associate at the Stimson Center where she spearheaded programs focused on the future of the nuclear weapons laboratories, transnational threats and congressional education. She was the primary author of Leveraging Science for Security: A Strategy for the Nuclear Weapons Laboratories in the 21st Century (2009) and co-authored Cooperative Nonproliferation: Getting Further, Faster (2005). Dr. Turpen also served in the Office of Senator Pete Domenici and supported legislative efforts on defense, nonproliferation and foreign affairs. She has taught in an adjunct capacity at the Elliott School of International Affairs, George Washington University, as well as at Georgetown University. Dr. Turpen holds a PhD from the Fletcher School of Law and Diplomacy at Tufts University.