The report prepared by the Vienna-based International Atomic Energy Agency (IAEA) stated that estimates of Iran’s stockpile of uranium enriched up to 60 percent purity in the form of uranium hexafluoride, which can be further enriched in centrifuges, reached 440.9 kilograms by June 13, 2025, representing an increase of 32.3 kilograms compared to the May 2025 assessment.

The report explained that this data “is based on information provided by Iran, verification activities conducted by the Agency between May 17, 2025, and June 12, 2025 (the day before the military attacks began), as well as estimates based on previous operations of the relevant facilities.”

The report noted that this level is only a short technical step away from uranium enrichment levels needed to make weapons-grade uranium at 90%, clarifying that about 42 kilograms of uranium enriched to 60% could theoretically be sufficient to produce one nuclear bomb if enrichment is raised to 90%.

The report added that since June 13, the Agency has been unable to conduct on-site verification activities to collect independent data on Iran’s nuclear activities and to verify Iranian data used to estimate changes in the previously declared stockpile.

It is worth noting that Israel launched an operation against Iran on the night of June 13, accusing it of pursuing a secret military nuclear program. The airstrikes and sabotage group raids targeted nuclear facilities, generals, prominent nuclear physicists, and airbases.

Iran denied these accusations and responded with attacks, with both sides exchanging strikes for 12 days. The United States joined with a single attack on Iranian nuclear facilities on the night of June 22.

In response to Washington, Tehran launched missile strikes on the Al Udeid Air Base in Qatar on the evening of June 23 and declared it had no intention of further escalation.

US President Donald Trump confirmed that the United States had set back Iran’s nuclear program by decades, while IAEA Director Rafael Grossi suggested that Iran still possesses “some capabilities to process, convert, and enrich uranium” at the Fordow, Natanz, and Isfahan facilities. He added that these facilities “suffered significant damage,” but “some remain operational.”

Grossi called for inspectors to continue their work in Iran “to regain information about ongoing activities.”

Meanwhile, Iranian Foreign Minister Abbas Araghchi stated that Grossi’s desire to inspect the nuclear facilities hit by strikes was “meaningless and may carry bad intentions,” noting that the Iranian parliament had decided to suspend the Islamic Republic’s cooperation with the IAEA.