Global Risk

Pentagon Misses Warhead Retirement Deadline

10.14.09 | 2 min read | Text by Hans Kristensen
Retirement of the W62 warhead, seen here at Warren Air Force Base, has been been delayed.

.
By Hans M. Kristensen

The Pentagon has missed the deadline set by the 2001 Nuclear Posture Review for the retirement of the W62 nuclear warhead.

Retirement of the warhead, which arms a portion of the 450 U.S. Minuteman III intercontinental ballistic missiles, was scheduled for completion in Fiscal Year 2009, which ended on September 30th.

But the Department of Defense has been unable to confirm the warhead has been retired, saying instead earlier today: “The retirement of the W62 is progressing toward completion.”

The 2001 Nuclear Posture Review decided that, “the W62 will be retired by the end of Fiscal Year 2009.”  The schedule was later reaffirmed by government officials and budget documents. But the February 2009 NNSA budget for Fiscal Year 2010 did not report a retirement but a reduction in “W62 Stockpile Systems” – meaning the warhead was still in the Department of Defense stockpile, adding that a final annual assessment report and dismantlement activities will be accomplished in FY2010.

Offloading of the W62 from the Minuteman force has been underway for the past several years. First deployed in 1970, the W62 has a yield of 170 kilotons and is the oldest and least safe warhead in the U.S. stockpile. It is being replaced on the Minuteman III by the 310-kiloton W87 warhead previously deployed on the MX/Peacekeeper missile.

This publication was made possible by a grant from Carnegie Corporation of New York and Ploughshares Fund. The statements made and views expressed are solely the responsibility of the author.

publications
See all publications
Global Risk
Report
A Practical Guide to Evaluating Chinese Media and Public Data for Studying Nuclear Forces

While advanced Chinese language proficiency and cultural familiarity remain irreplaceable skills, they are neither necessary nor sufficient for successful open-source analysis on China’s nuclear forces.

12.16.25 | 10 min read
read more
Global Risk
Report
A Guide to Satellite Imagery Analysis for the Nuclear Age – Assessing China’s CFR-600 Reactor Facility

Satellite imagery has long served as a tool for observing on-the-ground activity worldwide, and offers especially valuable insights into the operation, development, and physical features related to nuclear technology.

12.01.25 | 1 min read
read more
Global Risk
Report
Inspections Without Inspectors: A Path Forward for Nuclear Arms Control Verification with “Cooperative Technical Means”

This report outlines a framework relying on “Cooperative Technical Means” for effective arms control verification based on remote sensing, avoiding on-site inspections but maintaining a level of transparency that allows for immediate detection of changes in nuclear posture or a significant build-up above agreed limits.

11.10.25 | 3 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