Nuclear Weapons Technologies

CSTSP has conducted, participated, or co-sponsored several projects assessing nuclear forensics technologies; the reliable replacement warhead; nuclear weapons in 21st Century national security; nuclear weapon stockpile management, safety, and security; nuclear energy issues having relevance to nonproliferation; and advances in nuclear test monitoring and verification. These projects have included premier nuclear weapons scientists, verification experts, and policy experts to evaluate relevant technologies, current policy issues associated with these technologies, and options for addressing concerns related to theft and/or illicit use of nuclear materials.

Nuclear Forensics: Role, State of the Art, Program Needs

This report was produced by a joint Working Group (WG) of the American Physical Society (APS) Panel on Public Affairs and the American Association for the Advancement of Science (AAAS) Center for Science, Technology and Security Policy. The primary purpose of this report is to provide the Congress, U.S. government agencies and other institutions involved in nuclear forensics with a clear unclassified statement of the state of the art of nuclear forensics; an assessment of its potential for preventing and identifying unattributed nuclear attacks; and identification of the policies, resources and human talent to fulfill that potential. The WG formally met twice, once in Washington, D.C., and once in Palo Alto, California, to hear presentations from staff of the DOE/NNSA, the DHS, the DOS, the DTRA, and Congress. The sessions were unclassified, although several members of the WG have access to classified material.

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Summary Report: Workshop on U.S. Nuclear Weapons Stockpile Management (2011)

November 10, 2011

On November 10, 2011, the Center for Science, Technology, and Security Policy at the American Association for the Advancement of Science (AAAS), the Hudson Institute Center for Political-Military Analysis and the Union of Concerned Scientists (UCS) hosted a workshop to discuss the future of the Department of Energy’s stockpile management program. The meeting was unclassified and off the record. To allow free discussion, it was carried out under the Chatham House Rule in which statements made during the meeting (such as those reported here) can be cited but not attributed to individual speakers.

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United States Nuclear Weapons Program: The Role of the Reliable Replacement Warhead (2007)


Stockpile stewardship has satisfactorily maintained U.S. nuclear weapons for nearly 15 years without nuclear testing. Sustaining this record will require a continuation of the commitment to the scientific facilities and staff at the National Laboratories and modernization of the production complex (whether or not the stockpile includes Reliable Replacement Warheads [RRWs] in addition to legacy weapons that have undergone life extension programs [LEPs]).

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