Most current U.S. nuclear warheads were built in the 1970s and 1980s and are being retained longer than was planned. Yet they deteriorate and must be maintained. To correct problems, a Life Extension Program (LEP) replaces components. Modifying some components would require a nuclear test, but the U.S. has observed a test moratorium since 1992. The NNSA and the DoE, would develop the Reliable Replacement Warhead (RRW). Contents of this report (1) Need to Maintain Nuclear Warheads for the Long Term; The Solution So Far: Is LEP Satisfactory for the Long Term?; RRW and the Transformation of Nuclear Warheads; (2) RRW Program Developments; (3) Congressional Action; (4) Chronology, 2007-. A print on demand report.

Most current U.S. nuclear warheads were built in the 1970s and 1980s and are being retained longer than was planned. Yet they deteriorate and must be maintained. To correct problems, a Life Extension Program (LEP), part of a larger Stockpile Stewardship Program (SSP), replaces components. Modifying some components would require a nuclear test, but the United States has observed a test moratorium since 1992. Congress and the Administration prefer to avoid a return to testing, so LEP rebuilds these components as closely as possible to original specifications. With this approach, the Secretaries of Defense and Energy have certified stockpile safety and reliability for the past 12 years without nuclear testing. NNSA argues it will become harder to certify current warheads with LEP because small changes may undermine confidence in warheads, perhaps leading to nuclear testing, whereas new-design replacement warheads created by the RRW program will be easier to certify without testing. Critics believe LEP and SSP can maintain the stockpile indefinitely. They worry that untested RRWs may make testing more likely and question cost savings, given high investment cost. They note that there are no military requirements for new weapons. Others feel that neither LEP nor RRW can provide high confidence over the long term, and would resume testing. Another point of view is that either LEP or RRW will work without nuclear testing. This report provides background and tracks legislation. It will be updated to reflect final FY2010 congressional action on RRW. See also CRS Report RL33748, Nuclear Warheads: The Reliable Replacement Warhead Program and the Life Extension Program, by Jonathan Medalia, which compares these two programs in detail.

Operation Iraqi Freedom (OIF), the U.S.-led coalition military operation in Iraq, was launched on March 20, 2003, with the goal of removing Saddam Hussein¿s regime and destroying its ability to use weapons of mass destruction. The focus of OIF has shifted from regime removal to helping the Gov¿t. of Iraq improve security, establish a system of governance, and foster economic development. This report addresses these policy issues: Identifying how U.S. national interests and strategic objectives, in Iraq and the region, should guide further U.S. engagement; Monitoring and evaluating the impact of the changes in the U.S. presence and role in Iraq; and Laying the groundwork for a traditional bilateral relationship. Map. A print on demand report.