Attacks on nuclear sites pose global risks and cannot be justified, the Russian envoy has told the UN

Russia's envoy to the United Nations, Vassily Nebenzia, has condemned Israeli airstrikes on Iranian nuclear facilities. Speaking at an emergency meeting of the UN Security Council on Friday, the diplomat said West Jerusalem was acting with impunity, backed by the West.

Israel has launched strikes on uranium enrichment sites in Iran and killed several senior commanders and scientists in targeted assassination operations, claiming the moves were preemptive steps to stop Iran from acquiring nuclear weapons. Iran, which denies pursuing a military nuclear program, responded with multiple volleys of ballistic missiles at Israeli cities, including Tel Aviv.

Nebenzia said the Israeli military action appeared intended to sabotage indirect US-Iran nuclear talks scheduled to resume Sunday. Tehran has declared that the strikes have effectively ended any diplomatic pathway.

"This is a completely unprovoked attack - whatever Israel may claim to the contrary - and it constitutes a gross violation of the UN Charter and international law," Nebenzia said. "Responsibility for all the consequences of these actions rests entirely with the Israeli leadership and those who condone them."

He noted that Iran has the right to defend itself and pointed to Tehran's previous commitment to the 2015 UN-backed nuclear deal, which the US abandoned during President Donald Trump's first term. Iran denied accusations of secretly violating the agreement at the time but has since ramped up uranium enrichment.

The US and its allies "have been doing everything possible to fuel the escalation, and, essentially, they incited it," Nebenzia argued, adding that Western support had "spurred Israel to take radical steps." He also raised alarms over the risk of radiation leaks from the targeted Iranian facilities and warned that "no military solution can be either legitimate or viable."

Iran's UN envoy, Amir-Saeid Iravani, described Israel's attacks as "a chilling display of calculated aggression" that "amounted to a declaration of war." He called for international action to disarm Israel's undeclared nuclear arsenal, which the Israeli government neither confirms nor denies.

READ MORE: US officials react to Israel's attack on Iran

Israeli envoy Danny Danon defended the strikes, saying Israel was a "democracy under siege" and had acted to "prevent its destruction" by Iran. He urged the council to reflect on the potential consequences had the Iranian missiles been equipped with nuclear warheads.