Chart showing the number of U.S. nuclear warheads from 1945 to present

The United States is releasing newly declassified information on the U.S. nuclear weapons stockpile to update the information previously released in September 2017. Increasing the transparency of states’ nuclear stockpiles is important to nonproliferation and disarmament efforts, including commitments under the Nuclear Non-Proliferation Treaty, and efforts to address all types of nuclear weapons, including deployed and nondeployed, and strategic and non-strategic.

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A visual look at current U.S. nuclear stockpile. The National Nuclear Security Administration ensures a safe, secure, and reliable nuclear stockpile.