The FAS Nuclear Notebook is co-authored by Hans M. Kristensen and Robert S. Norris and published bi-monthly in the Bulletin of the Atomic Scientists. Each issue provides a snapshot of a nuclear-armed country weapons programs or a global nuclear weapons matter. The FAS Nuclear Notebook is one of the most widely sourced reference materials worldwide for reliable information about the status of nuclear weapons, and it is the most visited section of the Bulletin of the Atomic Scientists web site. Because of their importance as a resource to an informed public debate about nuclear weapons, the FAS Nuclear Notebooks are freely available on the Internet.
Recent FAS Nuclear Notebooks:
September 2016: [no Notebook this month]
Older issues from 2015 back to 1999 can be found here, and earlier are available at Google Books. The first issue of the Nuclear Notebook (back then it was produced by the Natural Resources Defense Council and called the NRDC Nuclear Notebook) was published in the May 1987 issue of the Bulletin of the Atomic Scientists.
The research that makes the FAS Nuclear Notebooks possible is generously supported by the Ploughshares Fund and the New Land Foundation.