http://www.cbo.gov/sites/default/files/cbofiles/attachments/49870-NuclearForces.pdf
Estimates the costs of maintaining and/or modernizing current U.S. strategic nuclear forces over the next ten years at $348 billion. Provides detailed breakdowns among strategic and tactical weapons and delivery systems, nuclear weapons labs, and command/control/communications systems. From the Congressional Budget Office
http://www.fas.org/sgp/crs/nuke/R41910.pdf
Discusses broad themes related to nuclear cooperation with other countries including proliferation threats posed by civil nuclear commerce, the sagging market share of the U.S. nuclear industry, and bilateral relations with other countries. From the Congressional Research Service, posted by the Federation of American Scientists
https://www.osti.gov/opennet/hearing.jsp
Declassified transcripts of a classic Cold War document, the hearings by the Atomic Energy Commission that resulted in the revocation of the security clearance of Oppenheimer, the physicist who led the Manhattan Project to produce the first atomic bomb. The first time the complete text has been available. From the Energy Department
http://fas.org/irp/eprint/attribution.pdf
Recently declassified 2009 report on the challenge of identifying the perpetrator of a potential nuclear attack on the U.S. and the problems in reconciling the careful search for and analysis of forensic evidence with the demand for speed from the policy/political environment. From the Office of the Director of National Intelligence, posted by the Federation of American Scientists.
http://www2.gwu.edu/~nsarchiv/nukevault/ebb485/
A collection of ten recently declassified documents on the behind the scenes debate in the Nixon Administration on whether to dissuade Israel from acquiring nuclear weapons. From the National Security Archive
https://www.osti.gov/opennet/manhattan_district.jsp
Multi-volume history of the project to develop an atomic bomb, now complete with the release of Volume 14 on Intelligence and Security, following its declassification. The volumes record the project’s activities and achievements in research, design, construction, and operation. From the Department of Energy
http://www2.gwu.edu/~nsarchiv/nukevault/ebb480/
A collection of 12 formerly classified documents dating from the late 1950s and early 1960s which reveal estimates of potential damage from a nuclear exchange with the Soviet Union. The documents are mostly summaries from the still-classified full-length reports from the National Security Council’s highly secret Net Evaluation Subcommittee. From the National Security Archive
http://www.fas.org/sgp/crs/nuke/R43143.pdf
This report summarizes cooperative activities conducted during the full 20 years of U.S. threat reduction and nonproliferation assistance. Reviews the programs and their funding. From the Congressional Research Service, posted by the Federation of American Scientists