I am Hans M. Kristensen, director of the Nuclear Information Project at FAS. I will be blogging facts, analysis, and declassified documents about new nuclear weapon systems, changes in existing nuclear forces, and developments in the policy and doctrine that guide the use of nuclear weapons.
You may have noticed that the Cold War is over and the total nuclear weapons stockpiles are decreasing. But, surprise, all the nuclear weapons states continue to modernize their forces as if the weapons are going to be around for a very long time in significant numbers. And the nuclear planners have turned out to be very innovative when it comes to creating new missions for the remaining weapons.
I also co-author the Nuclear Notebook in the Bulletin of the Atomic Scientists and the World Nuclear Forces overview in the SIPRI Yearbook.
Is sole authority solvable, or is it truly the best system possible for nuclear launch authority? If the latter, should we accept that reality?
On September 3, 2025, China showcased its military power in a parade commemorating the 80th Anniversary of the end of World War II. The parade featured a large number of new military weapons and equipment, including new and modified nuclear systems that had not been previously publicly displayed. This parade was also the first time […]
With 2000 nuclear weapons on alert, far more powerful than the first bomb tested in the Jornada Del Muerto during the Trinity Test 80 years ago, our world has been fundamentally altered.
As the United States continues nuclear modernization on all legs of its nuclear triad through the creation of new variants of warheads, missiles, and delivery platforms, examining the effects of nuclear weapons production on the public is ever more pressing.