United States nuclear weapons, 2021

The Nuclear Notebook is researched and written by Hans M. Kristensen, director of the Information Project with Federation American Scientists, Matt Korda, a research associate project. column has been published in Bulletin Atomic Scientists since 1987. This issue examines status US nuclear arsenal. arsenal remained roughly unchanged last year, Defense Department maintaining an estimated stockpile approximately 3,800 warheads. Of these, only 1,800 warheads are deployed, while 2,000 held reserve. Additionally, 1,750 retired awaiting dismantlement, giving total inventory 5,550 that 400 on land-based intercontinental ballistic missiles, 1,000 submarine-launched 300 at bomber bases United States, 100 tactical bombs European bases.