The Nuclear Posture Review is deeply troubling in many respects, starting at the conceptual level with its unfounded assertion that the need for American nuclear deterrence has declined. By further unilaterally limiting the circumstances in which the U.S. would use nuclear weapons to protect itself and its allies, the Obama administration is in fact increasing international instability and the risks of future conflicts. By abandoning the reliable replacement warhead project, and drastically limiting programs to ensure the safety and reliablity of our existing nuclear stockpile, the president is risking our security and obtaining nothing in return. Nuclear proliferators, as well as countries with chemical and biological weapons programs, can only welcome these further unforced American errors on the road to nuclear impotence.