washington >> President Donald Trump says Iran’s key nuclear sites were “completely and fully obliterated” by U.S. strikes.

Trump made the comments at the White House Saturday night hours after announcing the U.S. military had carried out strikes against three key nuclear facilities in Iran.

The president also warned Tehran against carrying out retaliatory attacks against the U.S., saying Iran has choice between “peace or tragedy.”

Iran’s nuclear agency Sunday confirmed attacks took place on its Fordo, Isfahan and Natanz atomic sites, but is insisting its work will not be stopped.

The Atomic Energy Organization of Iran issued the statement after President Donald Trump announced the American attack on the facilities.

“The Atomic Energy Organization of Iran assures the great Iranian nation that despite the evil conspiracies of its enemies, with the efforts of thousands of its revolutionary and motivated scientists and experts, it will not allow the development of this national industry, which is the result of the blood of nuclear martyrs, to be stopped,” it said in its statement.

The U.S. military struck three sites in Iran early Sunday, directly joining Israel ’s war aimed at decapitating the country’s nuclear program in a risky gambit to weaken a longtime foe amid Tehran’s threat of reprisals that could spark a wider regional conflict.

President Donald Trump was the first to disclose the strikes. There was no immediate acknowledgment from the Iranian government. Iran’s state-run IRNA news agency reported that attacks targeted the country’s Fordo, Isfahan and Natanz nuclear sites. The agency did not elaborate.

The decision to directly involve the U.S. in the war comes after more than a week of strikes by Israel on Iran that aimed to systematically eradicate the country’s air defenses and offensive missile capabilities, while damaging its nuclear enrichment facilities. But U.S. and Israeli officials have said that American stealth bombers and the 30,000-pound bunker buster bomb they alone can carry offered the best chance of destroying heavily fortified sites connected to the Iranian nuclear program buried deep underground.

“We have completed our very successful attack on the three Nuclear sites in Iran, including Fordow, Natanz, and Esfahan,” Trump said in a post on social media. “All planes are now outside of Iran air space. A full payload of BOMBS was dropped on the primary site, Fordow. All planes are safely on their way home.”

Trump added in a later post that he would address the nation at 10 p.m. Eastern time, writing “This is an HISTORIC MOMENT FOR THE UNITED STATES OF AMERICA, ISRAEL, AND THE WORLD. IRAN MUST NOW AGREE TO END THIS WAR. THANK YOU!”

Israeli Prime Minister Benjamin Netanyahu praised Trump’s decision to attack in a video message directed at the American president.

“Your bold decision to target Iran’s nuclear facilities, with the awesome and righteous might of the United States, will change history,” he said. Netanyahu said the U.S. “has done what no other country on earth could do.”

The White House and Pentagon did not immediately elaborate on the operation. But Fox News host Sean Hannity said an hour before Trump’s speech that he had spoken with Trump and that six bunker buster bombs were used on the Fordo facility. Hannity said 30 Tomahawk missiles fired by U.S. submarines 400 miles away struck the Iranian nuclear sites of Natanz and Isfahan.

The strikes are a perilous decision, as Iran has pledged to retaliate if the U.S. joined the Israeli assault, and for Trump personally. He won the White House on the promise of keeping America out of costly foreign conflicts and scoffed at the value of American interventionism.

Trump told reporters Friday that he was not interested in sending ground forces into Iran, saying it’s “the last thing you want to do.” He had previously indicated that he would make a final choice over the course of two weeks.

Iran’s Supreme Leader Ayatollah Ali Khamenei warned the United States on Wednesday that strikes targeting the Islamic Republic will “result in irreparable damage for them.” And Iranian Foreign Ministry spokesman Esmail Baghaei declared “any American intervention would be a recipe for an all-out war in the region.”

Trump has vowed that he would not allow Iran to obtain a nuclear weapon, and he had initially hoped that the threat of force would bring the country’s leaders to give up its nuclear program peacefully.

The Israeli military said Saturday it was preparing for the possibility of a lengthy war, while Iran’s foreign minister warned before the U.S. attack that American military involvement “would be very, very dangerous for everyone.”

The prospect of a wider war loomed. Iranian-backed Houthi rebels in Yemen said they would resume attacks on U.S. vessels in the Red Sea if the Trump administration joined Israel’s military campaign. The Houthis paused such attacks in May under a deal with the U.S.

The U.S. ambassador to Israel announced that the U.S. had begun “assisted departure flights,” the first from Israel since the Hamas-led attack Oct. 7, 2023, that sparked the war in Gaza.