Israel's military said that it launched a "broad wave of strikes" on targets in Iran, after the Islamic republic fired rounds of missile barrages at Israeli territory.
The military said the targets of its latest strikes include Iranian "launch sites, air defence systems, and additional infrastructure."
Air raid sirens rang out across multiple parts of Israel overnight as the military worked to intercept incoming Iranian fire.
There were no immediate reports of significant impact, although police said munitions fell in the Tel Aviv area, where one woman suffered mild shrapnel injuries.
Meanwhile the Israeli military called on people to leave 16 towns and villages in southern Lebanon, in an "urgent warning" before using force against Hezbollah targets.
"For your safety, you must evacuate your homes immediately" and head to "open areas", said a statement shared by the military's Arabic-language spokesman Avichay Adraee, listing 16 locations near the border.
'Everything's been knocked out' - Trump
US President Donald Trump has made claims of wide damage on Iran inflicted by the US-Israel attack, while denying that Israel had forced his hand into launching the war.
"Just about everything's been knocked out," Mr Trump said as he met German Chancellor Friedrich Merz, answering his first questions from reporters since the strikes began on Saturday.
Mr Trump's administration has given conflicting reasons for going to war, with Secretary of State Marco Rubio saying last night that the US did so only after learning that ally Israel was going to strike.
But Mr Trump walked that back, saying that he acted to prevent Tehran launching an assault first.
Explosions tore through Tehran and Beirut today and financial markets around the world tumbled at the prospect of a prolonged disruption to global energy supplies from the US-Israeli air war against Iran.
Trump: 'Everything's been knocked out' in Iran
The US embassy in Riyadh this afternoon warned of an imminent attack in the eastern Saudi city of Dhahran, home to much of the kingdom's energy installations along the Gulf coast.
"There is a threat of imminent missile and UAV attacks over Dhahran. Do not come to the US Consulate" the embassy wrote on its official X account.
The warning came just hours after the US mission in Riyadh was attacked by two drones that sparked a small fire on the embassy grounds, as Iran pressed on with retaliatory strikes across the Gulf.
The White House responded by shutting those missions and ordering non-emergency government personnel and their families to leave countries across the Middle East.
Meanwhile, Israeli and US strikes hit the Tehran building of a body tasked with electing Iran's new supreme leader, local media reported.
"The American-Zionist criminals attacked the Assembly of Experts building in Qom," south of Tehran, according to the Tasnim news agency.
Local media showed footage of the building severely damaged in the strikes.
***Security Alert: Threat of Imminent Missile / UAV Attacks Over Dhahran***
— U.S. Embassy Riyadh (@USAinKSA) March 3, 2026
**There is a threat of imminent missile and UAV attacks over Dhahran. Do not come to the U.S. Consulate.**
Take cover immediately in your residence on the lowest available floor and away from windows.…
Trump threatens Spain ties over Iran war refusal
President Trump threatened to sever all trade with Spain after it refused to let US planes use its bases to attack Iran, while also lashing out at Britain for not cooperating more.
"Spain has been terrible," Mr Trump told reporters as he met German Chancellor Friedrich Merz at the White House.
"So we're going to cut off all trade with Spain. We don't want anything to do with Spain," Mr Trump said, adding that he had asked Treasury Secretary Scott Bessent to "cut off all dealings with Spain".
'Not Churchill'
Mr Trump also stepped up his criticism of UK Prime Minister Keir Starmer for not initially permitting American warplanes to use UK bases to strike Iran, saying "this is not Winston Churchill that we're dealing with".
"The UK has been very, very uncooperative," he said. "I'm not happy with the UK,"
"It's taken three, four days for us to work out where we can land."
It comes as the UK announced that it was sending helicopters with counter drone capabilities and the warship HMS Dragon to bolster Cyprus' defences, as part of its "defensive operations".
The move came after a British Royal Air Force base on the eastern Mediterranean island was attacked early Monday by Iranian-made drones, one of which hit the runway, according to officials.
US navy could escort tankers through Hormuz Strait
President Trump has suggested that the US navy would escort oil tankers through the Strait of Hormuz if needed amid the Iran war, and ordered Washington to provide insurance for shipping.
"If necessary, the United States Navy will begin escorting tankers through the Strait of Hormuz, as soon as possible. No matter what, the United States will ensure the FREE FLOW of ENERGY to the WORLD," Mr Trump said on his Truth Social platform.
'Too late'
In a post on Truth Social, President Trump said that it was too late for talks with Iran even though the Iranian government wants them.
"Their air defense, Air Force, Navy, and Leadership is gone. They want to talk. I said 'Too Late!'" he wrote, two days after saying he had agreed to talks, amid the joint Israeli-US bombardment of Iran.
A day after President Trump and Israeli Prime Minister Benjamin Netanyahu gave open-ended answers when asked how long the war would last, a source said that Israel's campaign had been planned to last two weeks and was moving faster than expected.
The source, familiar with Israel's war plan, said its aim was to overthrow Iran's clerical rulers, and there was no firm deadline to achieve it.
But the Israeli military was going through its target list faster than planned, with early success killing Iran's leaders and taking out its defences, the source said.
Israel was also accelerating its campaign out of concern that the White House might agree with Iran's surviving leaders to stop before Israel's objectives were realised, the source added.
Watch: Donald Trump says Iran war could last weeks
Inside Iran, Israel struck the Tehran headquarters of the state broadcaster IRIB.
Israel also said it had launched attacks on Iran's Presidential Office and on the National Security Council building in the Iranian capital.
The Israeli military has also announced that it struck an underground nuclear site on the outskirts of Tehram where it said scientists were "covertly" developing a key component for an atomic weapon.
The United Nations nuclear watchdog said the key Iranian nuclear site of Natanz suffered "recent damage".
"Based on the latest available satellite imagery, IAEA can now confirm some recent damage to entrance buildings of Iran's underground Natanz Fuel Enrichment Plant.
"No radiological consequence expected," the International Atomic Energy Agency (IAEA) said in a post on X.
Iran said its death toll from the US-Israeli attacks so far had reached 787, citing the Red Crescent.
Elsewhere, a series of overhead explosions were heard from Jerusalem after the Israeli military said it had detected fresh missiles launched from Iran and was "operating to intercept the threat".
While Israeli police said there were several impact areas involving munition fragments within the Tel Aviv district.
Since yesterday, the war has spread to Lebanon, where Iran's Hezbollah allies fired on Israel, which responded with air strikes and reinforcements of ground positions in the south.
The UN said more than 30,000 people have been forced to flee their homes in Lebanon by the escalation of hostilities in the Middle East.
Iran has called the war an unprovoked attack. It has responded by firing missiles and drones at neighbouring Arab states and strangling shipping through the Strait of Hormuz, where a fifth of the world's oil and liquefied natural gas trade travels past its coast.
The US-Israeli campaign killed Iranian Supreme Leader Ayatollah Ali Khamenei on day one, in what may have been history's first assassination of a national leader by enemy forces from the air.
If the campaign were to achieve the aim of overthrowing Iran's ruling system using air power with no armed force on the ground, that would also be a first.
State media showed hundreds packing the streets of the southern city of Minab to mourn scores of girls killed in the bombing of a girls' school on the war's first day, by far the worst of several reported attacks to hit civilian targets.
The UN human rights office demanded an investigation into the strike, which its spokesperson called "absolutely horrific".
Some Iranians have openly celebrated the death of Khamenei, 86, who had ruled Iran for 37 years and led security forces that killed thousands of anti-government protesters only weeks ago. But the relentless bombing has sown fear even among those hoping for change.
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Israeli Foreign Minister Gideon Saar earlier urged countries to cut ties with Iran, during a virtual meeting with around 60 envoys stationed in Israel.
"The foreign minister told the ambassadors that... countries around the world must cut off their relations with (Iran)," a statement issued by Mr Saar's office said.
View: Map of attacks and counterattacks
Iran meanwhile urged the United Nations Security Council to take action to stop the war.
"The United Nations Security Council has a duty... if it wishes, it can certainly act, because there is no obstacle to its action except its own will," said foreign ministry spokesman Esmaeil Baqaei.
Iran's Revolutionary Guards warned of more intense attacks on US forces and Israel, hours after saying it had shut the Strait of Hormuz.
"The enemy must await continuous punitive attacks; the gates of hell will open more and more, moment by moment, upon the United States and Israel," spokesman Ali Mohammad Naini told state TV.
