FAS

Declassification of Nuclear Warhead Build Rate Sought

01.15.15 | 1 min read | Text by Steven Aftergood

The Federation of American Scientists this week petitioned the Department of Energy to declassify the annual rate at which the United States built new nuclear weapons throughout the cold war.

“The proposed declassification would enrich public understanding of the historical development of the U.S. stockpile. Disclosure of the actual build rate per year would add a dimension to the cold war historical narrative and bolster transparency in nuclear policy,” the FAS request said.

Total annual build rates have previously been declassified for the years 1945 through 1961.

The last completely new nuclear weapon in the U.S. arsenal was assembled on July 31, 1990, according to Stephen I. Schwartz of the Middlebury Institute of International Studies at Monterey.

publications
See all publications
Government Capacity
Blog
A Research, Learning, and Opportunity Agenda for Rebuilding Trust in Government

At a recent workshop, we explored the nature of trust in specific government functions, the risk and implications of breaking trust in those systems, and how we’d known we were getting close to specific trust breaking points.

11.10.25 | 6 min read
read more
Education & Workforce
day one project
Policy Memo
Analytical Literacy First: A Prerequisite for AI, Data, and Digital Fluency

tudents in the 21st century need strong critical thinking skills like reasoning, questioning, and problem-solving, before they can meaningfully engage with more advanced domains like digital, data, or AI literacy.

11.07.25 | 13 min read
read more
Emerging Technology
day one project
Policy Memo
Behavioral Economics Megastudies are Necessary to Make America Healthy

When the U.S. government funds the establishment of a platform for testing hundreds of behavioral interventions on a large diverse population, we will start to better understand the interventions that will have an efficient and lasting impact on health behavior.

11.06.25 | 10 min read
read more
Global Risk
Press release
FAS Receives $500k Grant On Emerging Disruptive Technologies and Mobile Nuclear Launch Systems

The grant comes from the Carnegie Corporation of New York (CCNY) to investigate, alongside The British American Security Information Council (BASIC), the associated impact on nuclear stability.

11.06.25 | 3 min read
read more