Slain Iranian nuclear scientists raises alarm over uranium, expertise reaching black market

The sidesplitting of Iranian atomic scientists successful U.S.-Israeli subject strikes has raised fears that, if nan authorities destabilizes, weakened power complete uranium stockpiles and nan dispersed of atomic expertise could summation proliferation risks.

While Iran tin switch its mislaid personnel, experts opportunity nan mislaid expertise will beryllium harder to rebuild and undisclosed sites successful nan state whitethorn besides time off vulnerable materials and knowledge vulnerable.

"Currently, nan consequence of atomic coercion aliases atomic worldly moving to nan achromatic marketplace remains low," said Kelsey Davenport, head of nonproliferation argumentation astatine nan Arms Control Association.

"Non-state actors would look challenges successful accessing enriched uranium, and it is improbable they would person nan infrastructure to enrich it to weapons-grade levels and person it into nan metallic shape required for a warhead core," she said.

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Mourners stitchery astir nan flag-draped coffins of nan Iranian equipped forces generals, atomic scientists and their family members connected nan trucks, who were killed successful Israeli strikes, during their ceremonial ceremony successful Tehran, Iran, Saturday, June 28, 2025. (Vahid Salemi/AP)

"However, if nan existent Iranian authorities implodes aliases nan conflict causes important soul instability, location is an accrued consequence that atomic materials will beryllium stolen aliases diverted to undeclared sites."

"There is besides a consequence that Iranian atomic scientists whitethorn beryllium consenting to waste their expertise to states aliases non-state actors seeking atomic weapons," Davenport said successful a caller report.

Several elder figures successful Iran’s atomic and defense infrastructure person been killed complete nan past 2 years, coinciding pinch nan run of U.S. and Israeli strikes connected Iran’s atomic facilities betwixt 2025 and 2026.

Among them is Hossein Jabal Amelian, caput of nan Organization of Defensive Innovation and Research (SPND), who was killed successful 2026 during Operation Rising Lion and Operation Epic Fury.

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President Pezeshkian said Iran would rebuild nan atomic accommodation targeted by nan US, and make them stronger successful 2025. (Iranian Presidency / Handout/Anadolu via Getty Images)

SPND is seen arsenic nan successor to Iran’s pre-2004 atomic weapons programme and plays a cardinal domiciled successful caller weaponization research.

Others killed successful 2025 see Mohammad Mehdi Tehranchi, Akbar Motallebizadeh and Said Borji, each linked to weaponization work.

"The afloat effect of this run connected Iran’s weaponization capabilities remains unclear," Jim Lamson, a elder investigation subordinate astatine nan Center for Nonproliferation Studies, told Fox News Digital.

"There will beryllium replacements of nan managers and scientists, but nan effect connected nan killed officials' acquisition and expertise will beryllium difficult to replace," nan former CIA expert said.

"Many cardinal scientists progressive successful suspected weaponization activity were killed successful 2025 and 2026."

"Their successors whitethorn besides fearfulness being targeted successful nan future, whether by subject strikes aliases assassination. That could impact their information and willingness to participate successful immoderate atomic weapons program."

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Coffin during nan ceremonial for Iranian atomic intelligence Mohammad Reza Sedighi Saber. (Alborz Irani/SOPA Images/LightRocket via Getty Images)

Lamson besides said galore of those targeted were embedded successful delicate areas of Iran’s atomic work, including nan substance rhythm and weaponization.

"These scientists had expertise successful areas of nan atomic substance rhythm of cardinal interest for atomic weapons, including nan accumulation of highly enriched uranium (HEU), which was Iran's main pathway for fissile material," he said.

"The scientists besides had expertise successful weaponization — that is, successful cardinal aspects of nan creation and accumulation of atomic explosive devices," Lamson added.

That said, U.S. and Israeli targeted strikes person besides hit a web of sites tied to their work, creating other obstacles for Iran’s programme successful nan adjacent term, he said.

"We person identified astatine slightest 11 weaponization-related sites that person been deed since 2024," Lamson said.

"These see SPND headquarters, a recently identified tract called Min-Zadayi successful northeast Tehran, SPND’s Taleghan and Sanjarian explosives testing sites, nan Defense Ministry’s Shahid Meisami analyzable successful occidental Tehran and respective investigation universities."

These accommodation were each progressive successful neutronics, explosives, metallurgy and atomic physics — each tied to atomic weapons development, he said.

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Satellite imagery shows reinforcement efforts astatine Pickaxe Mountain tract arsenic Trump says Tehran pursuing atomic weapon (Vantor/Reuters)

Despite nan standard of nan latest strikes, Iran retains enriched atomic material, pinch President Donald Trump saying April 17 that nan U.S. would activity pinch Iran to retrieve "nuclear dust" — enriched uranium — from sites, adding that some countries would usage dense machinery to region it.

The International Atomic Energy Agency besides estimates Iran still holds much than 200 kilograms of uranium enriched to 60% astatine Esfahan—enough for astir 5 weapons if further enriched.

Iranian Foreign Minister Seyed Abbas Araghchi besides said it remains "under nan rubble" of erstwhile strikes and that Tehran has nary plans to retrieve it.

"It is ever imaginable that Iran has further sites that were not known to Israel and nan U.S.," Lamson said.

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"We will person to hold to spot really overmuch these operations construe into a lasting strategical effect connected Iran’s expertise to nutrient atomic weapons."

"It’s easier to place nan harm and decease caused by nan Israeli and U.S. strikes, and harder to measure their existent effect connected Iran's capabilities and intentions to nutrient a atomic weapon," Lamson clarified.