The U.S. faces a host of new threats to our vital interests, including proliferation of cruise missiles, weapons of mass destruction, ballistic missile technology, questions about Russia s control of strategic nuclear forces, and an increasing tendency for terrorists to conduct mass casualty attacks. These new threats require a comprehensive, deterrence-oriented homeland defense program. Lessons learned from a study of U.S. homeland defense history will provide a basis for recommending improvements to homeland defense policy and strategy. Homeland defense is a basic function of our...