Contact: Kingston Reif, Director for Disarmament and Threat Reduction Policy, (202) 463-8270 x104
Updated: January 2018
The 2010 New START treaty limits both the United States and Russia to 1,550 strategic nuclear warheads deployed on 700 long-range delivery systems--intercontinental ballistic missiles (ICBMs), submarine-launched ballistic missiles (SLBMs), and bombers. These treaty limits do not have to be met until 2018.
Under New START, the
• Under the treaty, the country will retain 400 deployed Minuteman III ICBMs, all with a single warhead, and an additional 54 non-deployed silo launchers of ICBMs that will remain in a warm, operational status.
• Some bombers will be converted to conventional-only missions (not accountable under New START), and 60 deployed nuclear-capable bombers will be retained. Bombers are not on alert or loaded with weapons in peacetime, and New START counting rules allow each bomber to be counted as “one” deployed warhead, even though bombers can carry up to 16-20 nuclear weapons.
In addition to the treaty limit of 700 deployed systems, the treaty allows for 800 deployed and non-deployed missile launchers, and bombers. The United States plans to retain 454 deployed and non-deployed ICBM launchers, 280 deployed and non-deployed ICBM launchers, and 66 deployed and non-deployed heavy bombers.
As strategic forces are reduced under the treaty, those that remain would be upgraded. Over the next decade, the administration plans to invest hundreds of billions of dollars to modernize the nuclear weapons complex and nuclear delivery systems.
Under New START, both sides release aggregate data on their stockpiles every six months. The table below reflects the most recent data released as of September 1, 2017.
This table shows how the deployed U.S. strategic nuclear stockpile will decline by 2018, when reductions under New START would be completed.
All figures are from official sources except for shaded warhead numbers, which are best estimates. New START counts each bomber as one warhead, even though bombers can carry many more.
Trident II D5
-Updated by Marissa Papatola