The Biological and Chemical Weapons Nonproliferation and Response Program examines the distinct issues associated with biological and chemical weapons, as well as the technologies and regulatory frameworks designed to minimize the risk that these agents pose to human security.

Chemical and biological weapons share a characteristic distinct from nuclear weapons: fairly easily acquired raw materials (for most pathogens or chemicals) that either have legitimate uses or occur naturally. The CBW project focuses on the history of biological and chemical weapons, measures to control their proliferation (including domestic laws and international regimes), and weapons destruction technologies. Technical reports examine the likelihood of terrorism involving chemical and biological weapons, as well as technologies and policies to prevent or counter their use.