Even though the United States plans to reduce the number of warheads deployed on its longrange missiles and bombers, consistent with the terms of the New START Treaty, it also plans to develop new delivery systems for deployment over the next 20-30 years. The 113th Congress will continue to review these programs during the annual authorization and appropriations process. This book reviews the ongoing programs that will affect the expected size and shape of the U.S. strategic nuclear force structure. This book also provides basic information about U.S. and Russian nonstrategic nuclear weapons, and projected costs of United States nuclear forces.