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An X reveals a Diamond: locating Israeli Patriot batteries using radar interference

Amid a busy few weeks of nuclear-related news, an Israeli researcher made a very surprising OSINT discovery that flew somewhat under the radar.

11.13.18 | 4 min read
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NNSA Plan Shows Nuclear Warhead Cost Increases and Expanded Production

By Hans M. Kristensen NNSA has published the Stockpile Stewardship and Management Plan for Fiscal Year 2019, which updates the agency’s work on producing and maintaining the U.S. stockpile of nuclear warheads. The latest plan follows the broad outlines of last year’s plan but contains important changes. The new plan shows significant cost increases and […]

11.05.18 | 6 min read
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New START Numbers Show Importance of Extending Treaty

By Hans M. Kristensen The latest New START treaty aggregate numbers published by the State Department earlier today show a slight increase in U.S. deployed strategic forces and a slight decrease in Russian deployed strategic forces over the past six months. The data shows that the United States and Russia as of September 1, 2018 […]

10.05.18 | 4 min read
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Russian ICBM Upgrade at Kozelsk

By Hans M. Kristensen New satellite photos show substantial upgrades of ICBM silos at the missile field near Kozelsk in western Russia. The images show that progress is well underway on at least half of the silos (possibly more) of the second regiment of the 28th Guards Missile Division from the Soviet-era SS-19 ICBM to […]

09.05.18 | 3 min read
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New Nuclear Notebook: Pakistani Nuclear Forces, 2018

By Hans M. Kristensen, Robert S. Norris, and Julia Diamond The latest FAS Nuclear Notebook has been published in the Bulletin of the Atomic Scientists: Pakistani nuclear forces, 2018 (direct link to PDF). We estimate that Pakistan by now has accumulated an arsenal of 140-150 nuclear warheads for delivery by short- and medium-range ballistic and […]

09.04.18 | 2 min read
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The Pentagon’s Annual Report on Chinese Military

By Hans M. Kristensen [Updated August 21, 2018] The Pentagon’s annual report to Congress on China’s military and security developments has finally been published, several months later than previous volumes. Normally it takes about one month after the report is generated to be published. This year it took three times that long. The report covers […]

08.17.18 | 8 min read
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Russia Upgrades Nuclear Weapons Storage Site In Kaliningrad

By Hans M. Kristensen During the past two years, the Russian military has carried out a major renovation of what appears to be an active nuclear weapons storage site in the Kaliningrad region, about 50 kilometers from the Polish border. A Digital Globe satellite image purchased via Getty Images, and several other satellite images viewable […]

06.18.18 | 3 min read
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US SSBN Patrols Steady, But Mysterious Reduction In Pacific In 2017

By Hans M. Kristensen Despite their age, U.S. nuclear ballistic missile submarines (SSBNs) continue to carry out strategic deterrent patrols at a steady rate of around 30 patrols per year, according to data obtained from the U.S. Navy under the Freedom of Information Act (FOIA) by the Federation of American Scientists’ Nuclear Information Project. Yet […]

05.24.18 | 3 min read
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Nuclear Weapons Maintenance as a Career Path

The US Air Force has published new guidance for training military and civilian personnel to maintain nuclear weapons as a career specialty. See Nuclear Weapons Career Field Education and Training Plan, Department of the Air Force, April 1, 2018. An Air Force nuclear weapons specialist “inspects, maintains, stores, handles, modifies, repairs, and accounts for nuclear weapons, […]

04.12.18 | 1 min read
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2017 Nuclear Stockpile Total Declassified

The number of nuclear weapons in the U.S. nuclear stockpile dropped to 3,822 as of September 30, 2017, down from 4,018 a year earlier. (Retired weapons awaiting dismantlement are not included in the totals.)The totals do not include weapons that are retired and awaiting dismantlement.) Meanwhile, 354 nuclear weapons were dismantled in 2017, up from 258 […]

03.22.18 | 1 min read
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Despite Rhetoric, US Stockpile Continues to Decline

By Hans M. Kristensen The US nuclear weapons stockpile dropped to 3,822 warheads by September 2017 – down nearly 200 warheads from the last year of the Obama administration, according to new information released by the Department of Defense in response to a request from the Federation of American Scientists (see here for full document). […]

03.22.18 | 3 min read
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US Strategic Nuclear Forces, and More from CRS

The Congressional Research Service recently updated its report on US nuclear weapons and programs. See U.S. Strategic Nuclear Forces: Background, Developments, and Issues by Amy F. Woolf, March 6, 2018. That is also the subject of a new survey prepared by Hans M. Kristensen and Robert S. Norris of the Federation of American Scientists. See […]

03.08.18 | 1 min read
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