The Iran regime has significantly increased its stockpile of uranium enriched to near weapons-grade levels, according to a confidential report released by the United Nations’ nuclear watchdog, the International Atomic Energy Agency (IAEA). The agency issued a stark warning to Tehran, urging immediate cooperation with its long-running investigation into undeclared nuclear activities and sites.
Iran Regime’s Stockpile Nearing Weapons Threshold
As of May 17, the IAEA reported that the Iran regime possesses 408.6 kilograms (900.8 pounds) of uranium enriched to 60% purity — a level just short of the 90% required for weapons-grade material. This marks a nearly 50% increase from February, when the stockpile was at 274.8 kilograms (605.8 pounds). According to nuclear experts, roughly 42 kilograms of 60% enriched uranium is theoretically sufficient for one atomic bomb if further enriched.
In total, the Iran regime’s enriched uranium reserves — including lower enrichment levels — now amount to 9,247.6 kilograms (20,387.4 pounds), an increase of over 950 kilograms since the previous IAEA report.
The agency highlighted that Iran is currently “the only non-nuclear-weapon state” producing such high levels of enriched uranium, calling it a matter of “serious concern.” Despite Tehran’s insistence that its nuclear program serves peaceful purposes, IAEA Director General Rafael Mariano Grossi noted the regime now holds enough near-weapons-grade uranium to manufacture “several” nuclear weapons if it chose to take that path.
IAEA Details Extensive Undeclared Nuclear Weapons Development Activity by Iran Regime
A comprehensive report by the IAEA has uncovered troubling new evidence about the Iran regime’s past nuclear weapons-related activities. The agency’s findings point to a network of undeclared facilities and experiments that involved the production, testing, and storage of nuclear materials and equipment outside of international oversight.
Lavisan-Shian: Center of Weapons Testing
According to the IAEA, natural uranium was processed and used at the Lavisan-Shian site in 2003 to manufacture explosively driven neutron sources (EDNS), which are used to initiate nuclear chain reactions. These devices were explosively tested at least twice that year using scaled implosion systems. Additional equipment such as neutron detectors and specialized housings were also developed and tested at this site.
The agency noted that approximately 10 kilograms of undeclared uranium metal were used by the Applied Physics Institute at Lavisan, but it now believes the actual quantity was higher. The current whereabouts of this nuclear material remain unknown, raising fears of potential diversion for future weapons use.
Despite the regime’s stonewalling, the IAEA emphasizes that this file is “not resolved.” Iran has failed to declare both the nuclear material and the weapons-related activities conducted at Lavisan.
Marivan: Full-Scale Implosion Tests
At the Marivan site, the IAEA assessed that in 2003, the Iran regime conducted at least four explosive tests using full-scale hemispherical implosion systems, complete with high-speed camera diagnostics and neutron detection shielding. The site was later sanitized and bunkers removed before inspectors were granted access — a delay the agency considered highly suspicious.
Iran claimed the uranium traces at the site may have originated from Soviet-era mining activities, a claim the IAEA rejected as not technically credible. The agency maintains that the regime planned to manufacture EDNS at Marivan for future testing.
Varamin: Pilot-Scale Nuclear Fuel Cycle Work
The Varamin facility was found to be directly linked to Lavisan and the Physics Research Center. According to the IAEA, it operated as a pilot-scale uranium processing and conversion plant. The regime dismantled the facility and moved contaminated materials to Turquzabad, where they were kept until 2018.
Among the transferred items were small cylinders of UF6, uranium extractants, fluorine-based chemicals, and radiation monitoring equipment — all vital components of a uranium conversion plant. Despite the agency’s discovery of man-made uranium traces, Iran denied the existence of any nuclear-related activity at Varamin.
Turquzabad: Final Storage and Unresolved Questions
The IAEA concluded that Turquzabad served as a storage location for nuclear materials and equipment from Lavisan, Varamin, and other sites. Some containers dismantled at the site were moved to an unknown location in 2018. Iran has since provided no credible explanation for the presence of nuclear material there, instead alleging sabotage by foreign actors — a claim the IAEA noted lacked any supporting evidence, despite the existence of surveillance cameras at the facility.
The agency warned that the true extent of the regime’s undeclared nuclear activities remains unknown and that there may be nuclear material still unaccounted for, potentially outside of safeguards.
Diplomatic Consequences and Next Steps
The IAEA’s findings come at a time of growing international frustration with the Iran regime’s refusal to cooperate. While U.S. intelligence agencies currently believe Tehran has not restarted a formal weapons program, the technical groundwork laid by its past activities significantly reduces the time needed to develop a bomb if a political decision is made.
European nations may now move to trigger snapback sanctions, as permitted under the 2015 nuclear deal, which is set to expire formally in October. The IAEA’s reports provide the most detailed public evidence to date of how far the regime has gone in its undeclared nuclear weapons development — and how little transparency remains.
The world now faces a critical juncture: whether to act decisively on these findings or risk a nuclear-armed Iran regime operating beyond international control.
