Updated March 2021 Multiple Independently-targetable Reentry Vehicles (MIRVs) were originally developed in the early 1960s to permit a missile to deliver multiple nuclear warheads to different targets. In contrast to a traditional missile, which carries one warhead, MIRVs can carry multiple warheads. For instance, a Russian MIRVed missile under development may be able to carry […]
Fact Sheet: The Intermediate-Range Nuclear Forces Treaty Preservation Act of 2017
Click here for a printable PDF. Introduced: February 16, 2017 Senate sponsors of S.430: Senators Tom Cotton (R-Arkansas), Ron Johnson (R-Wisconsin), Marco Rubio (R-Florida), and John Barrasso (R-Wyoming). Summary of the Proposed Legislation: The U.S. has accused Russia of testing and deploying ground-launched cruise missiles (GLCMs) in violation of the 1987 Intermediate-Range Nuclear Forces (INF) […]
Fact Sheet: Iran Nuclear Agreement: Implementation
Iran has rolled back its nuclear program and the deal has made the world safer.
Fact Sheet: U.S. Nuclear Weapons Total Inventory
The size of the U.S. nuclear arsenal has decreased drastically since it peaked at 31,255 nuclear weapons in 1967. Many of the reductions since then have come as the result of bilateral arms control agreements with Russia, including the Strategic Arms Reduction Treaty (START) I, which capped deployed arsenals at 6,000 warheads and 1,600 delivery […]
Fact Sheet: The Threshold Test Ban Treaty (TTBT)
The Treaty on the Limitation of Underground Nuclear Weapon Tests, commonly known as the Threshold Test Ban Treaty (TTBT), is a bilateral agreement between the United States and Soviet Union (now Russia). Signed in 1974, the Treaty prohibits underground nuclear weapons tests greater than 150 kilotons, approximately 10 times larger than the bomb used against […]
