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Syrian nuclear reactor could have been useful for weapons, IAEA chief says

By Thomson Reuters Sep 7, 2026 | 9:18 AM

By Francois Murphy

VIENNA, Sept 7 (Reuters) – The nuclear reactor Syria had nearly completed in 2007 when Israeli jets destroyed it was of a type that could quickly ​produce fissile material usable in nuclear weapons, U.N. ‌nuclear watchdog chief Rafael Grossi said on Monday.

The International Atomic Energy Agency has described as a “historic breakthrough” its recent investigation into secret nuclear activities under the Assad family’s rule. The investigation uncovered around 73 metric tons ‌of ​natural uranium metal, mainly in the ⁠form of reactor fuel.

In a ⁠report to member states seen by Reuters, the IAEA confirmed its previous finding that the bombed site in Syria’s eastern province of Deir al-Zor was a nuclear reactor under ​construction, and that fuel for it had been made in Syria, all of which should have been declared at ⁠the time to the agency.

“This is ⁠a reactor that is very efficient in the ​production of fissile material that could be used directly for ​the fabrication of nuclear weapons,” Grossi told a press ‌conference, adding that it was “almost completed”.

“That was a very serious proliferation concern,” he said, while cautioning that the then-authorities’ intentions “cannot be judged”.

Since the ouster of President Bashar al-Assad in late 2024, ⁠Syria’s new authorities have committed to working with the IAEA to answer questions relating to so-called nuclear safeguards – the process of accounting ⁠for and monitoring ‌nuclear material.

“Having received the necessary access and information ⁠from Syria, … the Agency has been able ​to ‌clarify and resolve the Agency’s questions concerning the ​outstanding safeguards ⁠issues related to Syria’s past nuclear activities,” Grossi said in a speech to the IAEA’s 35-nation board.

“I welcome Syria’s transparency and cooperation with the Agency which facilitates the resolution of the outstanding safeguards issues related to Syria’s past nuclear activities,” he added.

(Reporting ​by Francois Murphy)