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Iran’s refusal to play ball with the United Nation’s nuclear watchdog, which is charged with monitoring all nations’ nuclear programs, has meant the body cannot verify whether Tehran’s program is “entirely peaceful” despite the regime’s claims.
Director General of the International Atomic Energy Agency (IAEA), Rafael Grossi, on Monday issued a warning statement that the agency has not only long been barred access to old and new nuclear sites, but that Iran has scrubbed locations in an apparent move to cover up its activities.
In 2020, the IAEA found man-made particles of enriched uranium at three sites, including Varamin, Marivan and Turquzabad. The locations were previously utilized in Iran’s nuclear program and gave the agency credence to believe Tehran had once again turned to deadly nuclear ambitions.
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Rafael Grossi is increasingly concerned about Iran’s nuclear program. (Albert Otti/picture alliance via Getty Images)
“Since then, we have been seeking explanations and clarifications from Iran for the presence of these uranium particles, including through a number of high-level meetings and consultations in which I have been personally involved,” Grossi said. “Unfortunately, Iran has repeatedly either not answered, or not provided technically credible answers to, the Agency’s questions.
“It has also sought to sanitize the locations, which has impeded Agency verification activities,” he added.
Grossi, who confirmed during an April trip to Washington, D.C. that the IAEA has not been involved in nuclear negotiations between the U.S. and Iran, said on Monday that he has been working “closely and intensively” with both parties in “support of their bilateral negotiation[s].”
The warning comes after the IAEA in a report late last month, also confirmed that Iran had drastically increased its stockpile of near-weapons-grade enriched uranium by nearly 35% in three months.
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This photo released on Nov. 5, 2019, by the Atomic Energy Organization of Iran shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. (Atomic Energy Organization of Iran via AP, File)
In February, the IAEA assessed that Tehran possessed 274.8 kilograms (605.8 pounds) worth of uranium enriched to 60%, but on May 17th it found Iran now has some 408.6 kilograms (900.8 pounds) – meaning the regime is just a technical step away from being able to make up to 10 nuclear warheads.
Last week, Iranian supreme leader Ayatollah Ali Khamenei came out in strong opposition to a U.S. proposal submitted to Tehran to end its nuclear program, though it remains unclear what details were included in the document, including on enrichment capabilities, and on Sunday, Iranian parliamentary speaker Mohammad Bagher Ghalibaf claimed the proposal didn’t include any sanction relief.
The White House has remained tight-lipped about what was included in the document, though according to some reporting, President Donald Trump gave Iran until June 11 to reach a deal with the U.S., though Fox News Digital could not independently verify these claims.
On Monday, Iranian Foreign Ministry spokesperson Esmaeil Baghaei confirmed that “The U.S. proposal is not acceptable to us. It was not the result of previous rounds of negotiations.”
Iranian Foreign Ministry Spokesman Esmaeil Baghaei attends a press conference in Tehran, Iran, on May 26, 2025. An interim nuclear agreement between Iran and the United States is not on Iran’s agenda, Baghaei said. (Shadati/Xinhua via Getty Images)
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“We will present our own proposal to the other side via Oman after it is finalized. This proposal is reasonable, logical, and balanced,” Baghaei reportedly said.
Some reporting has also suggested Iran might submit their proposal as soon as June 10, though the Iranian UN mission in the U.S. would not comment on or confirm these claims.
Caitlin McFall is a Reporter at Fox News Digital covering Politics, U.S. and World news.
