China's growing nuclear arsenal threatens to erode the United States' damage-limitation capability—its ability to destroy Chinese forces and thereby significantly reduce the damage that an all-out Chinese nuclear attack would inflict on the United States. Nevertheless, the United States should not attempt to preserve this capability. Doing so is technologically infeasible, would not add to the U.S. nuclear deterrent, would heighten tensions with China, and would increase the risk of nuclear escalation in a crisis.

As the debate on a U.S. national missile defense intensifies, the decision about whether the United States should develop an NMD system seems to be giving way to questions over the type of system to be deployed and its scope: For example, should the United States pursue NMD against Russia or China? What are the possible security benefits and costs of limited NMD? What can the United States do to counter the international political fallout of limited NMD?