IAEA to hold emergency board meeting Monday, Grossi says

Iran may legally withdraw from the Nuclear Non-Proliferation Treaty (NPT) following US strikes on its nuclear sites, an Iranian lawmaker said Sunday.

The attacks on Fordow, Natanz, and Isfahan constitute a “clear violation of international obligations,” Abbas Golroo, head of parliament’s foreign relations committee said, cited Article 10 of the NPT as grounds for exit.

The Islamic Republic would explore legal and international options in response, he added.

Under Article 10, a party may withdraw if it determines its supreme interests are jeopardized, with three months’ notice to other treaty members.

The strikes on Iran’s nuclear facilities were the result of the Islamic Republic’s “catastrophic pursuit of nuclear weapons,” Iran's exiled Crown Prince Reza Pahlavi said Sunday,

"Ali Khamenei and his crumbling terrorist regime have failed the nation,” he wrote on X.

“For the sake of the Iranian people, respond by stepping down,” he added, calling for a new chapter of peace and prosperity.

“The only sure way to achieve peace is for this regime to now end.”

Iran’s nuclear program poses a grave threat to international security, UK Prime Minister Keir Starmer said Sunday, urging Tehran to return to the negotiating table to help end the crisis.

“Iran can never be allowed to develop a nuclear weapon,” Starmer said in a statement, adding that the United States had “taken action to alleviate that threat” with its overnight strikes on Iranian nuclear facilities.

"Situation in the middle east remains volatile and stability in the region is a priority," he said, adding that ensuring regional stability must remain an urgent international priority.

The US military strike on its nuclear facilities was a violation of the UN Charter and international law, Iran’s Foreign Ministry on Sunday.

The statement came hours after the US bombed three nuclear sites in Iran, its first direct involvement in the conflict since Israel began its military campaign.

“This brutal military aggression… demonstrates the United States’ deep hostility toward the peace-seeking and independence-loving people of Iran,” the ministry said.

It accused Washington of colluding with Israel and held the US fully responsible for the consequences.

"Iran reserves the right to defend its national security and sovereignty with full force," the statement said, warning that silence from international bodies would endanger global security.

Arab officials have conveyed messages from the United States to Iran saying that Washington's military strikes are over and urging a return to diplomacy, The Wall Street Journal reported on Sunday.

According to Arab officials, the US used its partners in the region to assure Tehran that the strikes were a limited operation and not the start of a broader military campaign aimed at regime change in Iran.