WASHINGTON 鈥 President Donald Trump said Saturday that the U.S. military struck three sites in Iran, directly joining Israel's effort to decapitate 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.
Iran鈥檚 nuclear agency confirmed Sunday that attacks took place on its Fordo, Isfahan and Natanz atomic sites, but insisted its work will not be stopped.
鈥淭he 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,鈥 it said in its statement.
In an address to the nation Saturday night, Trump claimed Iran's key nuclear sites were 鈥渃ompletely and fully obliterated鈥 by the American strikes.
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He also warned Tehran against carrying out retaliatory attacks against the U.S., saying Iran has a choice between 鈥減eace or tragedy."
The Houthi rebels in Yemen threatened to resume attacks on U.S. vessels and warships if the Trump administration joined Israel鈥檚 campaign on Iran.
His decision to directly involve the U.S. comes after more than a week of Israeli strikes on Iran that moved to systematically eradicate the country's air defenses and offensive missile capabilities, while damaging its nuclear enrichment facilities.
U.S. and Israeli officials previously said American stealth bombers and a 30,000-pound bunker buster bomb 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 earlier 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."
The White House and Pentagon did not immediately elaborate on the operation. But Fox News host Sean Hannity said shortly after 9 p.m. Eastern that he spoke 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.

Children play Saturday in a public bomb shelter in Tel Aviv, Israel.
Israeli Prime Minister Benjamin Netanyahu praised Trump's decision to attack in a video message directed at the American president.
Iran's Supreme Leader Ayatollah Ali Khamenei warned Wednesday that U.S. 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, who won the White House on the promise of keeping America out of costly foreign conflicts and scoffed at the value of American interventionism, told reporters Friday that he was not interested in sending ground forces into Iran.
The president also vowed that he would not allow Iran to obtain a nuclear weapon. He initially hoped the threat of force would bring the country's leaders to give up its nuclear program peacefully.

Iranian Foreign Minister Abbas Araghchi listens to speeches Saturday as he attends the Council of Foreign Ministers of the Organization of Islamic Cooperation meeting in Istanbul, Turkey.
Israel's 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."
Iranian-backed Houthi rebels in Yemen also said they would resume attacks on U.S. vessels in the Red Sea if the Trump administration joins 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 the U.S. began "assisted departure flights," the first from Israel since the Hamas-led attack on Oct. 7, 2023, that sparked the war in Gaza.
At the prodding of Israeli officials and many Republican lawmakers,聽Trump appears to have聽made the calculation that Israel's operation softened the ground and presented a perhaps unparalleled opportunity to set back Iran's nuclear program, perhaps permanently.
The Israelis say their offensive already crippled Iran's air defenses, allowing them to significantly degrade multiple Iranian nuclear sites. Earlier, Israel's military said it struck an Iranian nuclear research facility overnight into Saturday and also killed three senior Iranian commanders.
But to destroy the Fordo nuclear fuel enrichment plant, Israel appealed to Trump for U.S. bunker-busting bombs, the 30,000-pound GBU-57 Massive Ordnance Penetrator, which is currently only delivered by the B-2 stealth bomber found only in the American arsenal.
The bombs are believed to be able to penetrate about 200 feet below the surface before exploding.

Parnia Rahmanian, 13, lies unconscious in a hospital bed Saturday聽in Tehran, Iran, following Israeli strike in her neighborhood of the city.
The International Atomic Energy Agency confirmed that Iran is producing highly enriched uranium at Fordo, raising the possibility that nuclear material could be released into the area if the GBU-57 A/B were used to hit the facility.
Previous Israeli strikes at Natanz on a centrifuge site caused contamination only at the site itself, not the surrounding area, the IAEA said.
Trump's decision for direct U.S. military intervention came after his administration made an unsuccessful two-month push 鈥 including with high-level, direct negotiations with the Iranians 鈥 aimed at persuading Tehran to curb its nuclear program.
A 2015 deal, signed by Iran, U.S. and other world powers, created a long-term, comprehensive nuclear agreement that limited Tehran's enrichment of uranium in exchange for the lifting of economic sanctions.聽Trump withdrew the U.S. from the agreement in 2018, during his first term.

A person illuminates a light inside a tent Saturday while spending the night in a public shelter as a precaution against possible Iranian missile attacks in Tel Aviv, Israel.
The war erupted June 13, with Israeli airstrikes targeting Iran's nuclear and military sites, top generals and nuclear scientists. At least 722 people, including 285 civilians, were killed in Iran and more than 2,500 wounded, according to a Washington-based Iranian human rights group.
Iran retaliated by firing more than 450 missiles and 1,000 drones at Israel, the Israeli army estimates. Israel's multitiered air defenses shot down most of them, but so far at least 24 people in Israel were killed and more than 1,000 wounded.
Earlier, Israel's defense minister said the military killed a paramilitary Revolutionary Guard commander who financed and armed Hamas in preparation for the Oct. 7, 2023, attack on Israel that sparked the ongoing 20-month war in Gaza.
Iranian officials did not immediately confirm Saeed Izadi's death, but the Qom governor's office said there was an attack on a four-story apartment building and local media reported two people were killed.

Iraqi women holds a portrait of Iran's Supreme Leader Ayatollah Ali Khamenei聽in the Shi'ite district of Kazimiyah in Baghdad, Iraq, during a rally Saturday to show solidarity with Iran.
Israel also said it killed the commander of the Quds Force's weapons transfer unit, who it said was responsible for providing weapons to Hezbollah and Hamas. Behnam Shahriyari was killed while traveling in western Iran, the military said.
Iranian leaders say IAEA chief Rafael Grossi's statements about the status of Iran's nuclear program prompted Israel's attack. On Saturday, a senior adviser for Iran's Supreme Leader Ali Khamanei, Ali Larijani, said on social media, without elaboration, that Iran would make Grossi "pay" once the war is over.
Photos: Israel attacks Iran's nuclear and missile sites

A woman carries water at the Mahane Yehuda market in Jerusalem ahead of Shabbat, Friday, June 13, 2025. (AP Photo/Ohad Zwigenberg)

A man sits on the empty beach along Tel Aviv's beachfront, Friday, June 13, 2025. (AP Photo/Leo Correa)

A general view of Tel Aviv's skyline, Friday, June 13, 2025. (AP Photo/Leo Correa)

An Iranian protester holds up an anti-U.S. placard and a poster of the late revolutionary guard Gen. Qassem Soleimani, who was killed in a U.S. attack in Iraq in 2020, in an anti-Israeli gathering in Tehran, Iran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

An Iranian protester holds up a poster of Chief of General Staff of the Armed Forces Mohammad Bagheri, who was killed in an Israeli strike, in an anti-Israeli gathering in Tehran, Iran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

The Western Wall, the holiest site where Jews can pray, stands nearly empty as Israel's Home Front Command banned public gatherings following an Israeli military strike on Iran, in Jerusalem's Old City, Friday, June 13, 2025. (AP Photo/Mahmoud Illean)

Firefighters work the scene of an explosion at a residence compound in northern Tehran, Iran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

A man walks at the scene of an explosion in a residence compound in northern Tehran, Iran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

A firefighter stands on a crane at the scene of an explosion at a residence compound after Israeli attacks in Tehran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

Damage is seen to an apartment building after Israeli attacks in Tehran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

Damages are seen in a building after an explosion in a residence compound after Israel attacked Iran's capital Tehran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

Smoke rises up after an explosion in Tehran, Iran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

Smoke rises from a damaged building in Tehran, Iran, early Friday, June 13, 2025. Israel attacked Iran's capital early Friday, with explosions booming across Tehran. (AP Photo)

Firemen work at an apartment building after it was hit in Tehran, Iran, early Friday, June 13, 2025. Israel attacked Iran's capital early Friday, with explosions booming across Tehran.(AP Photo/Vahid Salemi)

A firefighter calls out his colleagues at the scene of an explosion in a residence compound in northern Tehran, Iran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

Firefighters work the scene of an explosion at a residence compound in northern Tehran, Iran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

Debris from an apartment building is seen on top of parked cars after a strike in Tehran, Iran, early Friday, June 13, 2025. Israel attacked Iran's capital early Friday, with explosions booming across Tehran.(AP Photo/Vahid Salemi)

Residents watch a damaged apartment in Tehran, Iran, early Friday, June 13, 2025. Israel attacked Iran's capital early Friday, with explosions booming across Tehran.(AP Photo/Vahid Salemi)

A protester holds up an anti-Israeli placard in a gathering in Tehran, Iran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

Israel's Ben Gurion Airport is empty of passengers after all flights were canceled following an Israeli military strike on Iran, near Tel Aviv, Israel, Friday, June 13, 2025. (AP Photo/Ariel Schalit)

An Iranian protester holds up a poster of the Supreme Leader Ayatollah Ali Khamenei in an anti-Israeli gathering in Tehran, Iran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)

Firefighters and people clean up the scene of an explosion at a residence compound after Israeli attacks in Tehran, Friday, June 13, 2025. (AP Photo/Vahid Salemi)