The Limited Test Ban Treaty (LTBT) (also known as the Partial Test Ban Treaty) is a multilateral treaty banning explosive nuclear testing or “other nuclear explosions” in the atmosphere, outer space, and underwater. The treaty only permits underground nuclear testing if the test does not cause radioactive debris to be present outside the jurisdiction of […]
Fact Sheet: Nuclear Non-Proliferation Treaty (NPT)
The Treaty on the Non-Proliferation of Nuclear Weapons (also known as the Nuclear Non-Proliferation Treaty, or NPT) is an international agreement designed to prevent the spread of nuclear weapons, promote cooperation between states on peaceful uses of nuclear energy, and advance nuclear disarmament. The NPT was opened for signature on July 1, 1968, and the […]
Fact Sheet: The Comprehensive Test Ban Treaty (CTBT)
Updated April 2021 The Comprehensive Test Ban Treaty (CTBT) is a multilateral agreement that prohibits the explosive testing of nuclear weapons. The CTBT opened for signatures on September 24, 1996, but the agreement is still in the ratification stage. The United States has signed, but has not yet ratified the treaty. The United States conducted […]
Fact Sheet: Global Nuclear Weapons Inventories in 2017
Unless otherwise specified, all information in this chart comes from Kristensen’s and Norris’s Status of World Nuclear Forces 2017 CHART: Global Nuclear Weapons Inventories 2017 Deployed Non-deployed Retired Total United States[i] ~1,740a ~2,260 ~2,800 ~6,800 Russia[ii] ~1,950a ~2,350 ~2,700 ~7,000 France ~280 ~10 * ~290 United Kingdom ~120 ~95 * ~215 China 0 […]
Fact Sheet: Understanding the Iran Deal
A two-page analysis with everything you need to know about the elements of the final Iran deal.
