The American Association for the Advancement of Science’s Center for Science, Technology and Security Policy (CSTSP) held an event on “Ballistic Missile Defense: Technical, Strategic and Arms Control Challenges,” on June 6, 2013 in Washington, DC. The speakers were Philip Coyle of the Center for Arms Control and Nonproliferation, George Lewis of the Judith Reppy Institute for Peace and Conflict Studies (and the author of this blog), and Bruce MacDonald of the Federation of American Scientists and Johns Hopkins University/SAIS. The speaker’s PowerPoint presentations are now available at the CSTSP website at: http://www.aaas.org/cstsp/programs/nuclear-security.shtml (under “Selected Events”).