By Robert S. Norris, Hans M. Kristensen, July 1, 2009
Of 100 types of U.S. warheads developed since 1945, only 15 remain active. New warhead production ceased in 1992, but modified warheads continue to be introduced.
Read more: U.S. Nuclear Warheads, 1945-2009
Issue: Bulletin of the Atomic Scientists Volume 65 Issue 4
Topics: Nuclear Notebook
Norris is a senior fellow with the Federation of American Scientists in Washington, DC. A former senior research associate with the Natural Resources Defense Council, his principal areas of ...
Kristensen is the director of the Nuclear Information Project with the Federation of American Scientists (FAS) in Washington, DC. His work focuses on researching and writing about the status...
By Matt Field | Artificial Intelligence, Disruptive Technologies
By Emily Holden | Climate Change
By Lawrence J. Korb | Analysis, Nuclear Weapons
By Dawn Stover | Climate Change, What We’re Reading
By Miyo McGinn | Analysis, Climate Change
By Kathleen M. Tucker, Robert Alvarez | Analysis, Nuclear Risk, Nuclear Weapons
By Matthew Taylor | Analysis, Climate Change
By Heather Wuest | Climate Change, What We’re Reading