Dean Wilkening was a Senior Research Scientist at the Center for International Security and Cooperation at Stanford University, until December 2011. He holds a Ph.D. in physics from Harvard University and worked at the RAND Corporation prior to coming to Stanford. His major research interests include nuclear strategy and policy, arms control, the proliferation of nuclear and biological weapons, bioterrorism, ballistic missile defense, and energy and security. His most recent research focuses on the broad strategic and political implications of ballistic missile defense deployments in Northeast Asia, South Asia and Europe. Prior work focused on the technical feasibility of boost-phase ballistic missile defense interceptors. His recent work on bioterrorism focuses on understanding the scientific and technical uncertainties associated with predicting the outcome of hypothetical airborne biological attacks and the human effects of inhalation anthrax, with the aim of devising more effective civil defenses. He has participated in, and briefed, several US National Academy of Science committees on biological terrorism and consults for several US national laboratories and government agencies.