The proliferation of weapons of mass destruction and their means of delivery are increasingly a fact of life that first must be acknowledged and then managed. While striving to prevent further proliferation remains essential, a determined state may, nonetheless, succeed in acquiring weapons of mass destruction and increasingly capable missiles. As a consequence, a decisive change in policy should be aimed at devaluing investment in weapons of mass destruction and their delivery systems by potential adversaries. In a world of smaller, but in some respects more deadly threats, the ability to defend ourselves and our friends against attacks by missiles and other terror weapons can strengthen deterrence and provide an important complement to purely retaliatory capabilities. Moreover, the ability to protect our forces is essential to preserving our freedom to act in a crisis.
Nuclear deterrence remains an essential element of our defense policy.
The credibility, safety, reliability, and effectiveness of the nation's nuclear deterrent must remain unquestioned. But it must be adapted to 21st century deterrence needs. Credible deterrence no longer can be based solely on the prospect of punishment through massive retaliation. Instead, it must be based on a combination of offensive nuclear and non-nuclear defensive capabilities working together to deny potential adversaries the opportunity and benefits from the threat or use of weapons of mass destruction against our forces and homeland, as well as those of our allies. Second, the readiness and sustainability of deployed forces must be assured.