Jamie Withorne

@jamiewithorne.bsky.social

Nuclear weapons, international politics, and “”emerging”” technology. Doctoral Research Fellow in Political Science, University of Oslo LearnWMD Spreadsheet and Substack: www.jamiewithorne.com

BREAKING: IAEA chief Rafael Grossi says there is a “rapid increase” in operations at North Korea’s Yongbyon nuclear reactor, warning of a “very serious increase” in Pyongyang’s capability to produce nuclear weapons, now estimated at a few dozen warheads.

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On January 25, 1995, scientists in Norway launched a meteorological research rocket. It was immediately picked up by Russian early warning systems designed for nuclear weapons. The incident is important to reflect on today, write Jamie Withorne @jamiewithorne.bsky.social and Raven Witherspoon. ⬇️

What this Norwegian 'close call' says about a world without New START

The Andoya rocket launch incident is an important reminder of the value of pre-launch notifications, which is especially salient now that New START has expired.

thebulletin.org

In our latest with @thebulletin.org Raven Witherspoon and I discuss the implications of a historical Norwegian “close call” and Russian escalatory response. We unpack implications for pre-launch notifications today, especially in an era without New START. Link 👉 thebulletin.org/2026/04/what...

What this Norwegian 'close call' says about a world without New START

The Andoya rocket launch incident is an important reminder of the value of pre-launch notifications, which is especially salient now that New START has expired.

thebulletin.org

Tja, warum auch: "The United States joined Russia, China, and ‌Niger on Thursday in opposing a resolution adopted by the U.N. nuclear watchdog's board denouncing attacks on Ukraine's energy infrastructure as a threat to nuclear safety, diplomats said."

US opposes IAEA board resolution condemning attacks on Ukraine's power grid

The United States joined Russia, China, and ‌Niger on Thursday in opposing a resolution adopted by the U.N. nuclear watchdog's board denouncing attacks on Ukraine's energy infrastructure as a threat t...

reuters.com

We obtained the first publicly released satellite image of Ayatollah Ali Khamenei's compound in Tehran, after it was struck by Israel/US. There are several destroyed buildings. Current whereabouts of Iran's supreme leader are unknown; compound used as his official residence. 🛰️📸: @airbus.com

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📢 New article🌟 👤 Do Young Lee (ISV) @doyoung-lee.bsky.social 👉 Why reassuring allies is harder than deterring adversaries in extended deterrence: Evidence from US extended deterrence for South Korea 📖 Published in British Journal of Politics & International Relations. 🔗 doi.org/10.1177/1369...

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🚨 JUST IN: If the United States deploys advanced short-range ballistic missile systems to Norway’s Finnmark or Finland’s Lapland regions, and Russia detects them, a crisis similar to the 1962 Cuban missile crisis will ensue, writes Vladimir Marakhonov in @thebulletin.org. #nuclearweapons #nukesky

The looming missile crisis in the Arctic

Defense cooperation agreements between the United States and Northern European countries pose a direct threat to Russia’s Northern strategic forces. If the United States deploys advanced short-range b...

thebulletin.org