UN Watchdog Confirms Damage to Natanz Nuclear Site Entrance, Says No Radiation Risk
VIENNA — The International Atomic Energy Agency confirmed on March 3, 2026, that satellite imagery shows recent damage to entrance buildings at Iran’s underground Natanz Fuel Enrichment Plant, while emphasizing that no radioactive release is expected and the facility’s main operations remain unaffected .
The confirmation marks a shift from the UN nuclear watchdog’s initial statements, which had found no evidence of damage to Iranian nuclear facilities in the first days of the US-Israeli military campaign that began February 28 . IAEA Director General Rafael Grossi told a press briefing that the damage is limited to structures at the facility’s entrance, with no signs of additional impact inside the enrichment halls themselves .
“Based on the latest available satellite imagery, IAEA can now confirm some recent damage to entrance buildings of Iran’s underground Natanz Fuel Enrichment Plant,” the agency posted on its official X account. “No radiological consequence expected and no additional impact detected at FEP itself, which was severely damaged in the June conflict” .
From Contradiction to Confirmation
The IAEA’s updated assessment resolves a discrepancy that emerged on March 2 between Iranian claims and the agency’s initial analysis. Iran’s ambassador to the IAEA, Reza Najafi, told reporters at an emergency meeting of the Board of Governors that US and Israeli airstrikes had targeted the Natanz enrichment facility the previous day .
“Again they attacked Iran’s peaceful, safeguarded nuclear facilities yesterday. Their justification that Iran wants to develop nuclear weapons is simply a big lie,” Najafi said, directly contradicting Grossi’s earlier statement that the agency had “no indication” of damage to any nuclear installations .
At that time, Grossi had told the board: “Up to now, we have no indication that any of the nuclear installations, including the Bushehr Nuclear Power Plant, the Tehran Research Reactor, or other nuclear fuel cycle facilities, have been damaged or hit” . He added that the IAEA’s Incident and Emergency Center had been unable to contact Iranian nuclear regulatory authorities despite repeated attempts .
The IAEA’s subsequent review of new satellite imagery, captured between Sunday afternoon and Monday morning local time, revealed the damage that earlier images had not shown . David Albright, a former UN nuclear inspector and founder of the Institute for Science and International Security, told Reuters that commercial satellite imagery from Colorado-based Vantor showed two strikes on access points to the underground enrichment plant .
Albright’s analysis, which credited Israeli geo-analyst Ben Tzion Macales with first identifying the strikes, indicated that three buildings at Natanz had been destroyed . Two were personnel entrances to underground halls housing thousands of centrifuges, while the third covered the only vehicle access ramp to the facility .
Natanz: A Facility Already Severely Damaged
The Natanz complex, located approximately 220 kilometers south of Tehran, has long been at the center of international concerns over Iran’s nuclear program . It is a mix of above- and below-ground laboratories that historically conducted the majority of Iran’s uranium enrichment activities .
The facility was already “severely damaged” in the 12-day war between Iran and Israel in June 2025, according to Grossi’s previous assessments . During that conflict, Israel struck the main above-ground enrichment building, leaving it “functionally destroyed” and seriously damaging underground halls holding centrifuge cascades . A subsequent US attack on June 22, 2025, using bunker-buster bombs, hit Natanz’s underground facilities, likely decimating what remained .
Before the June 2025 war, the IAEA had reported that Iran was using advanced centrifuges at Natanz to enrich uranium up to 60 percent—a short technical step from weapons-grade levels of 90 percent . Some of that material is presumed to have been onsite when the complex was attacked .
The latest strikes, while damaging entrance infrastructure, appear not to have affected the already inoperable enrichment halls. The IAEA’s confirmation that “no additional impact detected at FEP itself” suggests that the main nuclear processing areas, already destroyed in June, were not further compromised .
No Radiation Risk, but Safety Concerns Remain
Grossi emphasized that the damage poses no radiological threat. “No radiological consequence expected,” the IAEA stated clearly in its announcement . The agency also confirmed that no elevation of radiation levels above normal background levels has been detected in countries bordering Iran .
However, the IAEA chief warned that the presence of operational nuclear power plants and research reactors across the region heightens safety risks amid ongoing military escalation . “We therefore urge utmost restraint in all military operations,” Grossi told the Board of Governors. “Armed attacks on nuclear facilities should never take place and could result in radioactive releases with grave consequences within and beyond the boundaries of the State which has been attacked” .
Iran operates several nuclear facilities beyond Natanz, including the Bushehr Nuclear Power Plant—a working power reactor—and the Tehran Research Reactor, both of which contain nuclear material . The IAEA has repeatedly stressed that these sites must remain protected from military strikes to prevent potential catastrophic releases .
Communication Breakdown and Limited Access
The IAEA’s ability to assess the situation has been hampered by a breakdown in communication with Iranian authorities. Grossi confirmed that the agency’s Incident and Emergency Center has been unable to reach Iran’s nuclear regulatory authorities, with “no response so far” to multiple contact attempts .
“We are, of course, in conversation with Iran, but at the moment, it’s very limited. Until last Thursday, it was very intense,” Grossi told a press conference . He added that while the IAEA has no staff in Iran at present, it is closely monitoring satellite imagery .
Tehran has not permitted IAEA inspectors to return to facilities damaged in the June 2025 strikes, limiting the agency’s ability to verify the status of nuclear materials and equipment . The current conflict has further restricted access, leaving the IAEA reliant on remote monitoring and satellite analysis.
Diplomatic Fallout and Iranian Condemnation
Najafi used the emergency Board of Governors meeting to launch a blistering attack on the United States, accusing Washington of “deception and disinformation to invade other countries” . He specifically targeted President Donald Trump, who announced the military operation on February 28.
“This war was launched by US President Donald Trump, who attempts to portray himself as a man of peace and asking for the Nobel Peace Prize. Even when they talk about peace, it is a lie. And if they call for diplomacy, it’s about deception,” Najafi said .
He called on the 35-member IAEA Board of Governors to “categorically condemn” the strikes, describing them as “unlawful, criminal and brutal” . Najafi reiterated that Iran is not seeking nuclear weapons, calling such claims “completely false” and “a big lie” used to justify aggression .
The emergency session was convened at Russia’s request, reflecting international concern over the targeting of nuclear facilities . Moscow has consistently called for restraint and warned of the dangers of military action near nuclear sites.
Looking Ahead: Nuclear Risks in an Expanding War
The confirmed damage to Natanz, while limited and posing no immediate radiological threat, underscores the dangers of military operations near nuclear facilities in an escalating conflict. With Iran’s full nuclear program still largely opaque to international inspectors and communication channels severed, the IAEA’s ability to monitor and ensure safety remains severely constrained.
Grossi’s repeated calls for restraint and diplomacy reflect the international community’s deep anxiety. “Diplomacy is hard, but it is never impossible,” he told the Board of Governors . Whether that message is heeded as the conflict enters its fifth day will determine not only the fate of Iran’s nuclear program but the potential for a catastrophic radiological incident that could affect the entire region.
For now, the IAEA continues to watch from afar, reliant on satellite images and limited contacts, hoping that the entrance buildings at Natanz remain the extent of the damage to Iran’s nuclear infrastructure.
With inputs from:
Reuters: IAEA verifies Natanz entrances bombed
TRT World: IAEA reverses Natanz statement
Economic Times: IAEA entrance damage no radiation
Straits Times: IAEA confirms Natanz entrances hit
For broader context, see our in-depth analysis on Modern World Order Explained: Power, Alliances & Global Systems.
Also in this section: Iran Death Toll Rises to 787 as US-Israeli Strikes Continue, Red Crescent Says 153 Cities Hit and US Embassy in Riyadh Struck by Iranian Drones as Conflict Engulfs Saudi Capital.
