Because of the immense military power they can confer, the political control of nuclear weapons has been a key issue for as long as they have existed; in most countries the use of nuclear force can only be authorised by the head of government or head of state. This book presents information on the policy put in place by the United States government to control the output of nuclear weapons. Topics discussed herein include monitoring and verification in arms control; securing nuclear materials; nuclear co-operation with other countries and the ballistic missile defence and offensive arms reductions.