I joined my terrific colleagues @myacoubian, @dbyman, & @WillTodman for a discussion on the Israel-Iran conflict: https://t.co/Hv4M7EoIEb @csisponi @CSISMidEast @CSISDefense @CSIS @UCF_SPSIA @MIT_SSP

🇺🇸 As Trump instructs Pentagon to start testing nuclear weapons ‘on an equal basis’ with Russia and China, this Ifri Paper by @doreen__h highlights that "the U.S. would gain little technical advantage from nuclear testing - it wouldn’t be to verify capability but to signal

As I mentioned in my @IFRI_ article, given how little technical advantage the US would gain from nuclear testing, it wouldn’t be to verify capability but to signal resolve to adversaries, and to possibly gain leverage in future negotiations. https://t.co/mgxPGPMNRM

The U.S. strikes on Iran's nuclear facilities test the boundaries of what counts as “nonproliferation.” My latest in @lawfare: https://t.co/pUaN4ALYgh @CSIS @CSISDefense @csisponi @MIT_SSP @UCF_SPSIA

Landmark day for #NATO as journalists are present for the first time ever to observe a nuclear exercise. “It’s time we talked to our publics about this” in light of the more dangerous threat environment the alliance faces, says Col. Daniel Bunch from SHAPE. #SteadfastNoon 1/

PONI is now accepting applications for its Nuclear Scholars Initiative! Young professionals with less than 7 years of experience are welcome to apply for the Class of 2026. Apply by November 17:

"Whether breakthroughs derive from vision or improvisation, arms control success has hinged on an understanding that arms control and national security can reinforce—not oppose—one another," writes @doreen__h. ⬇️ https://t.co/kMy9UgEtsT

My colleagues and I argue that the new Pakistan-Saudi defense pact signals a push for deeper regional security cooperation, but is still a long way from a NATO-style alliance. More immediately, it heightens scrutiny on Saudi Arabia’s nuclear commitments. https://t.co/22utalfeha

🚨 New article in @BulletinAtomic Sept magazine: What can we learn from Cold War arms control breakthroughs? I draw on new interviews with fmr senior U.S. officials who helped negotiate INF, START I & II, & PNIs. https://t.co/18HpIlys8X @CSIS @csisponi @CSISDefense @MIT_SSP

En cette Journée internationale contre les essais nucléaires, cette norme semble plus fragile que jamais. Aux Etats-Unis ou en Russie, la menace de reprise des essais est un levier stratégique assumé, comme le montre @doreen__h dans cette note @IFRI_ ⤵️ https://t.co/yDjAmgVfEI

The Countdown to Prevent Another Iranian Nuclear Crisis Just Began My thoughts on snapback for ⁦@CarnegieEndow⁩

New Analysis: @baileyschiff and I on what comes next in Israel’s campaign and how the fallout factor may play a role: https://t.co/u6Q69ER9LD @CSISDefense @CSIS @csisponi @UCF_SPSIA

The United States can destroy Irans infrastructure, but it cannot destroy Iranian knowledge. These strikes may set Iran back, but it is also likely to incentivize Iran toward the bomb. The US still needs a plan for deescalation & a long term strategy to prevent proliferation

Israel trage dem anscheinend Rechnung und habe den Reaktor bisher nicht angegriffen. „Dies steht in Einklang mit Israels historischer Bilanz, darauf zu achten, dass seine Präven­tiv­an­griffe nicht zu einer radioaktiven Verseuchung führen.“

Horschig macht sich größere Sorgen um das Atomkraftwerk in Bushehr. „In Fall von Angriffen ist das Risiko groß, dass radioaktive Partikel freigesetzt werden, die die Zivilbevölkerung gefährden.“

„Weil die Anlage [Fordow] so tief unter der Erde vergraben ist, werden sich die ökologischen Folgen, selbst im Fall einer Beschädigung der Zentrifugen, vermutlich auf die nähere Umgebung beschränken.“

Es war mir eine Ehre, einige Gedanken zu den Risiken einer radioaktiven Kontamination im Iran in @handelsblatt beizutragen:

Gerüchten zufolge hat Israel den Atomreaktor in Bushehr angegriffen. Angriffe auf den Reaktor im Süd-Iran wären gefährlich, sagt die Nuklearexpertin @doreen__h . Dabei könnten "radioaktive Partikel freigesetzt werden, die die Zivilbevölkerung gefährden.“ https://t.co/AdPBDCXtNF

My thoughts in @ForeignPolicy on what the current war might mean for the future of Iran's nuclear program. https://t.co/RSzxAnWuWG

Tomorrow at 4 pm ET, @CSISMidEast and @CSIS_Threats experts discuss the implications of the conflict between Israel and Iran and what comes next for the region. Watch here: