Key points
- Natanz nuclear site damaged in Israeli strikes
- No external radiation detected
- IAEA calls for restraint
ISLAMABAD: The International Atomic Energy Agency (IAEA) has confirmed that Iran’s Natanz nuclear site was damaged in an Israeli military strike, but reported no increase in radiation levels.
“At present, the competent Iranian authorities have confirmed that the Natanz enrichment site has been impacted and that there are no elevated radiation levels,” IAEA Director General Rafael Mariano Grossi told the United Nations Security Council on June 13.
Iranian officials also reported that, for now, the Esfahan and Fordow nuclear sites have not been impacted.
Just addressed the @UN Security Council #UNSC on the situation in Iran following this morning’s military operation by Israel, including attacks on nuclear facilities.
My full remarks: https://t.co/UvlBpGejvz pic.twitter.com/597NLKyRpa— Rafael Mariano Grossi (@rafaelmgrossi) June 13, 2025
“At Natanz, the above-ground part of the Pilot Fuel Enrichment Plant, where Iran was producing uranium enriched up to 60% U-235, has been destroyed,” Grossi said. He added that “the level of radioactivity outside the Natanz site has remained unchanged and at normal levels,” indicating no external radiological impact to the population or the environment.
Israeli strikes on nuclear facilities
The director general briefed the Council following Israeli strikes that targeted multiple nuclear-related sites in Iran. “Early this morning, the International Atomic Energy Agency (IAEA) was informed of the military operation launched by Israel which includes attacks on nuclear facilities in the Islamic Republic of Iran,” Grossi stated.
He confirmed that the strike at Natanz also destroyed the facility’s electricity infrastructure, including “the electrical sub-station, main electric power supply building, emergency power supply and back-up generators.”
Although there was no indication of a direct attack on the underground cascade hall housing additional enrichment equipment, Grossi noted that the power loss “may have damaged the centrifuges there.”
Monitoring the situation closely
The IAEA is monitoring the situation closely and remains in contact with the Iranian Nuclear Regulatory Authority. “There is radiological and chemical contamination inside the facilities in Natanz,” Grossi said, noting that the type of radiation present, mainly alpha particles, is manageable with proper safety protocols.
Iranian authorities have indicated that military activity has occurred near the Esfahan and Fordow sites, but according to Grossi, “at this moment we do not have enough information beyond indicating that military activity has been taking place around these facilities.”
Grossi called the situation “deeply concerning,” reiterating that “nuclear facilities must never be attacked, regardless of the context or circumstances.”
Violation of Statute of the Agency
He cited IAEA General Conference resolutions which affirm that such attacks “constitute a violation of the principles of the United Nations Charter, international law and the Statute of the Agency.”
Grave consequences
He urged all parties to show restraint, warning that “any military action that jeopardises the safety and security of nuclear facilities risks grave consequences for the people of Iran, the region, and beyond.”
The IAEA has activated its Incident and Emergency Centre and formed a task force of senior staff to maintain 24/7 monitoring. “I stand ready to engage with all relevant parties to help ensure the protection of nuclear facilities and the continued peaceful use of nuclear technology,” Grossi said.
“Dialogue and diplomacy”
He confirmed he had expressed his readiness to travel to the region as soon as possible “to assess the situation and ensure safety, security and non-proliferation in Iran.”
Grossi concluded by reaffirming the IAEA’s role as a platform for technical dialogue. “Despite the current military actions and heightened tensions, it is clear that the only sustainable path forward—for Iran, for Israel, the entire region, and the international community—is one grounded in dialogue and diplomacy to ensure peace, stability, and co-operation.”
COMPLETE STATEMENT
Director General Grossi’s complete statement to the UNSC made on June 13, 2025 on the situation in Iran is as follows:
“Early this morning, the International Atomic Energy Agency (IAEA) was informed of the military operation launched by Israel which includes attacks on nuclear facilities in the Islamic Republic of Iran.
As I reported this morning to the IAEA Board of Governors, we have been in permanent contact with the Iran Nuclear Regulatory Authority, to ascertain the status of relevant nuclear facilities and to assess any wider impacts on nuclear safety and security.
Iran has confirmed that at present, only the Natanz Fuel Enrichment Plant site has been attacked in today’s strikes. This facility contains the Fuel Enrichment Plant and the Pilot Fuel Enrichment Plant.
At Natanz, the above-ground part of the Pilot Fuel Enrichment Plant, where Iran was producing uranium enriched up to 60per cent U-235, has been destroyed.
Electricity infrastructure at the facility (electrical sub-station, main electric power supply building, emergency power supply and back-up generators) has been destroyed.
There is no indication of a physical attack on the underground cascade hall containing part of the Pilot Fuel Enrichment Plant and the main Fuel Enrichment Plant. However, the loss of power to the cascade hall may have damaged the centrifuges there.
The level of radioactivity outside the Natanz site has remained unchanged and at normal levels indicating no external radiological impact to the population or the environment from this event.
However, due to the impacts, there is radiological and chemical contamination inside the facilities in Natanz. The type of radiation present inside the facility, primarily alpha particles, is manageable with appropriate radiation protection measures.
At present, the Iranian authorities are informing us of attacks on the other facilities, the Fordow Fuel Enrichment Plant; and Esfahan site, where a fuel plate fabrication plant, a fuel manufacturing plant, a uranium conversion facility and an enriched UO2 powder plant are located. However I have to inform that at this moment we do not have enough information beyond indicating that military activity has been taking place around these facilities as well which initially had not been part of military operation.
All these developments are deeply concerning. I have repeatedly stated that nuclear facilities must never be attacked, regardless of the context or circumstances, as it could harm both people and the environment. Such attacks have serious implications for nuclear safety, security and safeguards, as well as regional and international peace and security.
In this regard, the IAEA recalls the numerous General Conference resolutions on the topic of military attacks against nuclear facilities, in particular, GC(XXIX)/RES/444 and GC(XXXIV)/RES/533, which provide, inter alia, that “any armed attack on and threat against nuclear facilities devoted to peaceful purposes constitutes a violation of the principles of the United Nations Charter, international law and the Statute of the Agency”.
Furthermore, the IAEA has consistently underlined that “armed attacks on nuclear facilities could result in radioactive releases with grave consequences within and beyond the boundaries of the State which has been attacked”, as was stated in GC(XXXIV)/RES/533.
As Director General of the International Atomic Energy Agency, and consistent with the objectives of the IAEA under the IAEA Statute, I call on all parties to exercise maximum restraint to avoid further escalation. I reiterate that any military action that jeopardizes the safety and security of nuclear facilities risks grave consequences for the people of Iran, the region, and beyond.
Madame Under Secretary General evoked that yesterday, the Board of Governors of the IAEA adopted an important resolution on Iran’s safeguards obligations. In addition to this, the Board resolution stressed its support for a diplomatic solution to the problems posed by the Iranian nuclear programme.
The IAEA continues to monitor the situation closely. Our Incident and Emergency Center (IEC) has maintained continuous contact with Iranian authorities from the onset of the attack, regularly confirming the status of the facilities and will continue to do so in the coming days. Additionally, we have established a task force comprising several senior staff members to monitor the situation closely over the next few days, and they will be available 24/7at the disposal of the UNSC.
The IAEA stands ready to provide technical assistance, and remains committed to its nuclear safety, security and safeguards mandate in all circumstances. I stand ready to engage with all relevant parties to help ensure the protection of nuclear facilities and the continued peaceful use of nuclear technology in accordance with the Agency mandate, including, deploying Agency nuclear security and safety experts (in addition to our safeguards inspectors in Iran) wherever necessary to ensure that nuclear installations are fully protected and continue to be used exclusively for peaceful purposes.
As I informed today the IAEA Board of Governors, I have indicated to the respective authorities my readiness to travel at the earliest to assess the situation and ensure safety, security and non-proliferation in Iran.
I have also been in contact with our inspectors in Iran and Israel. The safety of our staff is of paramount importance. All necessary actions are being taken to ensure they are not harmed.
Despite the current military actions and heightened tensions, it is clear that the only sustainable path forward—for Iran, for Israel, the entire region, and the international community—is one grounded in dialogue and diplomacy to ensure peace, stability, and cooperation.
The International Atomic Energy Agency, as the International technical institution entrusted with overseeing the peaceful use of nuclear energy, remains a unique and vital forum for dialogue, especially now.
In accordance with its Statute and longstanding mandate, the IAEA provides the framework and natural platform where facts prevail over rhetoric and where engagement can replace escalation.
I reaffirm the Agency’s readiness to facilitate technical discussions and support efforts that promote transparency, safety, security and the peaceful resolution of nuclear-related issues in Iran.”
