Hans M. Kristensen
Director, Nuclear Information Project at Federation of American Scientists
Associate Senior Fellow at sipri.org
Director, Nuclear Information Project, Federation of American Scientists. Tracking nuclear arsenals, writing Nuclear Notebook, SIPRI Yearbook. Opinions my own.
Articles
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3 weeks ago |
washingtonpost.com | Jon Wolfsthal |Hans M. Kristensen |Matt Korda
Why we should worry about nuclear weapons again (washingtonpost.com) Why we should worry about nuclear weapons again By Jon B. Wolfsthal; Hans Kristensen; Matt Korda 2025060411455600 Over the past 30 years, since the collapse of the Soviet Union, the prospect of nuclear war has faded from the American consciousness.
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1 month ago |
thebulletin.org | Hans M. Kristensen |Matt Korda |Eliana Johns |Mackenzie Knight
Russia is nearing the completion of a decades-long effort to replace all of its strategic and non-strategic nuclear-capable systems with newer versions.
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1 month ago |
tandfonline.com | Hans M. Kristensen |Matt Korda |Eliana Johns |Mackenzie Knight
ABSTRACTRussia is in the late stages of a multi-decade-long modernization program to replace all of its Soviet-era nuclear-capable systems with newer versions. However, this program is facing significant challenges that will further delay the entry into force of these newer systems. In this issue of the Nuclear Notebook, we estimate that Russia now possesses approximately 4,309 nuclear warheads for its strategic and non-strategic nuclear forces.
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2 months ago |
thecipherbrief.com | Hans M. Kristensen
Posted: April 7th, 2025 EXPERT Q&A — The Pentagon has regularly warned in recent months about China’s rapid nuclear buildup, a potential sign of Beijing preparing for a “major-power war.” The Department of Defense has reported a steady pace of China’s nuclear modernization and expansion efforts, from new missile silo fields to development of ballistic missile submarines.
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Mar 12, 2025 |
thebulletin.org | Hans M. Kristensen |Matt Korda |Eliana Johns |Mackenzie Knight
The modernization of China’s nuclear arsenal has both accelerated and expanded in recent years. In this issue of the Nuclear Notebook, we estimate that China now possesses approximately 600 nuclear warheads, with more in production to arm future delivery systems. China is believed to have the fastest-growing nuclear arsenal among the nine nuclear-armed states; it is the only Party to the Treaty on the Non-Proliferation of Nuclear Weapons that is significantly increasing its nuclear arsenal.
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Great to see @washingtonpost use our nuclear arsenal data in this article about the world nuclear arsenals: https://t.co/YFtwvOPY9b Promoting and enabling nuclear transparency is a central part of our mission.
The U.S. is sliding backward on so many issues. Here’s another example: “Support for solar energy and offshore wind falls among Democrats and independents, AP-NORC poll says” https://t.co/kFmcPOitPz https://t.co/QvVk3tKgCs
Interesting point here: the two largest military strikes on Iran’s facilities have not slowed the Iranian program as much as JCPOA did.
RISING LION and MIDNIGHT HAMMER have not slowed the Iranian program nearly as much as the JCPOA. We hold diplomacy to much higher standards than bombing. The same people who endlessly complained about the JCPOA "sunsetting" are now happy to delay Iran's bomb by much less. 15/17