Global Risk

Nuclear Research Highlighted by Bulletin of the Atomic Scientists

02.09.11 | 2 min read | Text by Hans Kristensen

By Hans M. Kristensen

The Nuclear Notebooks Robert Norris and I publish in the Bulletin of the Atomic Scientists are now the most frequently read articles in the magazine, according to their latest announcement.

The highlight of the announcement is Senator John Kerry’s use of our estimate of Russian nonstrategic nuclear weapons during the Senate Foreign Relations Committee hearing on the New START treaty on December 19, 2010.

The Bulletin announcement states that all current and previous Nuclear Notebooks are now freely available online. Issues back to 1999 are here. You’ll have to scroll down to the end of each table of content to find the Notebook in each issue. Earlier versions are available on Google Books.

In the past, Norris and I have urged the publisher of the Notebooks to make them freely available to the public to ensure that this important resource on the status of the world’s nuclear arsenals is available for the debate about the future of nuclear weapons.

The Notebooks are very popular. As of January 4, 2011, our Notebook on Chinese nuclear forces from November 2010 was listed as the most read article on the Bulletin’s web site, and 11 of the 50 most read articles were Notebooks.

Good estimates on nuclear arsenals don’t come easy or cheep but require time-consuming and persistent research. We’re grateful for the generous support we have received to do this work over the years from foundations including the Carnegie Corporation of New York, the Ford Foundation, the John D. and Catherine MacArthur Foundation, and the Ploughshares Fund.

publications
See all publications
Global Risk
Blog
What’s New for Nukes in the New NDAA?

The FY2026 National Defense Authorization Act (NDAA) paints a picture of a Congress that is working to both protect and accelerate nuclear modernization programs while simultaneously lacking trust in the Pentagon and the Department of Energy to execute them.

12.18.25 | 5 min read
read more
Global Risk
Report
Tracking the DF Express: 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