Miroslav Vientca, speaking to the United Nations Security Council, said the United States carried out military strikes on the Fordow, Natanz and Isfahan nuclear facilities in Iran on the evening of June 21, and that Iran's Atomic Energy Organization confirmed the attacks and reported no immediate signs of radioactive contamination.

Vientca said Iranian state media reported evacuations at the three sites and that the highly enriched uranium stockpile had been transferred in advance. He said Iranian authorities reported that two tunnels for entry and exit were destroyed at Fordow and that preliminary open-source satellite imagery showed damage at multiple points at the facility.

The remarks came amid a broader spike in hostilities between Iran and Israel and raised a risk of wider regional instability. Vientca noted that, hours after the U.S. strikes, the Islamic Revolutionary Guard Corps said it launched about 14 missiles at Israel; Israeli authorities reported more than 85 people injured and substantial damage to residential buildings and an elder care home in Tel Aviv and its southern suburbs. He said Israel reported it had struck military targets in Iran, including in Tehran, Tabriz and Yaft, and that the Israel Defense Forces said 30 fighter jets had struck dozens of military targets across Iran.

Vientca cited casualty figures reported by Iranian authorities and by Israel: he said Iran's Ministry of Health reported that, as of June 20, 430 people had been killed and more than 3,500 injured in Iranian territory from Israeli strikes, and that Israeli authorities reported 25 Israelis killed and about 1,300 injured since exchanges began with Iran. He also said Iranian media reported civilian fatalities, including children, and damage to homes and other civilian infrastructure.

Vientca warned the conflict could widen. He said some nonstate armed groups aligned with Iran had threatened action if the United States intervened, and that Iran's parliament had expressed support for measures that could include closing the Strait of Hormuz, while noting that Iran's Supreme National Security Council would need to take a final decision.

Vientca urged Iran to allow International Atomic Energy Agency inspectors access “to conduct damage assessments as soon as safety conditions allow.” He also called on all states to de-escalate and to uphold obligations under the United Nations Charter and relevant rules of international humanitarian law.

“There is no military solution to this conflict. We need diplomacy, de escalation, and confidence building now,” Vientca said.

The council was told it would shortly hear from IAEA Director General Grossi and was reminded of earlier warnings from Under-Secretary-General DiCarlo that the situation had been teetering on the edge of a larger conflict.

No formal Security Council action or vote on the strikes was recorded during the portion of the meeting covered by Vientca's statement.