Iran continues enrichment activities at bombed sites: UN watchdog
The UN nuclear watchdog has reported observing regular activity at Iran's bombed enrichment sites, despite ongoing stonewalling of inspector access. Satellite imagery shows vehicular movement, but without on-site inspections, the IAEA cannot verify the nature of these activities or Iran's uranium stockpile. This situation arises amid stalled US-Iran nuclear talks and heightened regional tensions.
Key Highlights
- IAEA observes Iran's regular activity at bombed nuclear sites.
- Iran restricts inspector access to key enrichment facilities.
- Satellite imagery used to monitor sites due to lack of direct access.
- IAEA unable to verify Iran's uranium stockpile status or enrichment activities.
- Stalled US-Iran nuclear talks compound concerns.
The International Atomic Energy Agency (IAEA) has reported observing "regular vehicular activity" at Iran's uranium enrichment sites, including the underground complex at Isfahan and facilities in Natanz and Fordow, which were previously bombed by the US and Israel in June 2025. Despite this observed activity, Iran continues to restrict access for IAEA inspectors to these sites, creating a significant challenge for the agency's verification efforts.
IAEA Director General Rafael Mariano Grossi stated that the agency has been unable to verify the status and location of Iran's stockpile of highly enriched uranium since the strikes in June 2025. This lack of access has resulted in a loss of "continuity of knowledge" over previously declared nuclear material at affected facilities, preventing the IAEA from confirming whether Iran has suspended all enrichment-related activities or ascertaining the current size, composition, or whereabouts of its enriched uranium stockpile. Consequently, Grossi warned that the IAEA "will not be in a position to provide assurance that Iran's nuclear program is exclusively peaceful" until Iran improves its cooperation. The agency's latest confidential report, seen by various news outlets, emphasizes the "utmost urgency" in addressing this loss of knowledge.
According to IAEA estimates, Iran possesses approximately 440.9 kilograms of uranium enriched up to 60% purity. This level is considered a short technical step away from the 90% purity required for weapons-grade uranium. Grossi has previously indicated that while this stockpile does not signify Iran's possession of a nuclear weapon, it could theoretically be sufficient for the production of multiple bombs if further enriched. The report also notes that some of Iran's most highly enriched uranium has been stored in an underground area at the Isfahan nuclear site, marking the first time the IAEA has specified the location of such material. Diplomats have indicated that the entrance to this tunnel complex was damaged in the June 2025 strikes by the US and Israel, but the facility itself appears to have remained largely unharmed.
The ongoing situation unfolds against a backdrop of stalled indirect negotiations between Iran and the United States aimed at addressing Tehran's nuclear activities. The latest round of talks, held on February 26, 2026, concluded without a deal, leaving the risk of further conflict in the region. Iran maintains that its nuclear program is exclusively for peaceful purposes, while the IAEA and Western nations have raised concerns about its potential to develop nuclear weapons, citing its historical pursuit of a nuclear weapons program until 2003. The lack of transparency and restricted access by Iran to its nuclear facilities exacerbates these concerns and complicates efforts to ensure the peaceful nature of its nuclear program. The British government has also announced the temporary withdrawal of its staff from Iran, citing rising regional tensions and the possibility of further US military action.
Historically, Iran's nuclear program has been a subject of international scrutiny for decades. Following the US withdrawal from the Joint Comprehensive Plan of Action (JCPOA) in 2018, Iran began to breach the limits imposed by the deal, accelerating its uranium enrichment activities and deploying advanced centrifuges. The bombings in June 2025 by the US and Israel were a significant escalation in the ongoing tensions, targeting key nuclear facilities, including Fordow, Natanz, and Isfahan. The IAEA's current inability to verify Iran's nuclear activities highlights the precariousness of the situation and the challenges in de-escalating the nuclear standoff.
Frequently Asked Questions
What has the IAEA observed at Iran's bombed nuclear sites?
The IAEA has observed regular vehicular activity at Iran's bombed uranium enrichment sites, including Isfahan, Natanz, and Fordow, through satellite imagery. However, due to restricted access, the agency cannot determine the nature or purpose of these activities.
Why is the IAEA unable to verify Iran's nuclear program?
Iran is restricting access for IAEA inspectors to its key nuclear facilities, particularly those bombed in June 2025. This lack of access has led to a loss of 'continuity of knowledge' for the agency, preventing it from verifying Iran's uranium stockpile status, enrichment activities, and ensuring the program's peaceful nature.
What is the significance of Iran's enriched uranium stockpile?
Iran possesses a significant stockpile of uranium enriched to 60% purity, which is a short technical step from weapons-grade material. The IAEA estimates this stockpile is theoretically sufficient for multiple nuclear bombs if further enriched, raising international concerns.
What is the current status of US-Iran nuclear talks?
Indirect negotiations between Iran and the United States over Tehran's nuclear program have recently concluded without a deal. The talks have stalled on fundamental issues like Iran's uranium enrichment and stockpile, amid heightened regional tensions and the threat of further military action.