U.S. Nuclear Weapons: Changes in Policy and Force Structure [Updated January 12, 2007] [open pdf - 282KB]
From the Summary: "The Bush Administration conducted a review of U.S. nuclear weapons force posture during its first year in office. The review sought to adjust U.S. nuclear posture to address changes in the international security environment at the start of the new century. Although it continued many long-standing policies and programs, it also introduced new elements into both U.S. policy and U.S. nuclear weapons programs. This report, which will be updated as needed, provides an overview of the U.S. nuclear posture to highlight areas of change and areas of continuity. […] Analysts and observers have identified several issues raised by the Administration's Nuclear Posture Review. These include the role of nuclear weapons in U.S. national security policy, how to make the U.S. nuclear deterrent 'credible,' the relationship between the U.S. nuclear posture and the goal of discouraging nuclear proliferation, plans for strategic nuclear weapons, and the future of non-strategic nuclear weapons."
CRS Report for Congress, RL31623