Rebecca Hersman is director of the Project on Nuclear Issues (PONI) and senior adviser with the International Security Program at the Center for Strategic and International Studies (CSIS). A leading expert on nuclear, chemical, and biological weapons policy; global health security; and crisis management, Ms. Hersman leads the preeminent national program designed to develop next generation nuclear expertise. An author of numerous studies and reports on nuclear and chemical weapons policy, emerging technologies and strategic stability, and crisis management and decision making, Ms. Hersman also co-chairs the CSIS U.S./UK/France Trilateral Dialogues on Nuclear Issues and has served as a commissioner on the CSIS Commission on Strengthening America’s Health Security.