Iran's supreme leader Ayatollah Ali Khamenei said Wednesday the nation would never surrender as demanded by President Donald Trump and warned the United States it would face "irreparable damage" if it intervenes in support of its ally.

The speech came six days into the conflict, with Trump demanding Iran's "unconditional surrender" while boasting the United States could kill Khamenei and fueling speculation about a possible intervention.

U.S. President Donald Trump met his National Security Council on Tuesday to discuss the Iran-Israel war, the White House said, as the U.S. leader considered whether to join Israel's air campaign against Tehran.

U.S. President Donald Trump met with his national security team in the White House Situation Room on Tuesday to make decisions about U.S. policy towards the war between Israel and Iran, three U.S. officials told U.S. news portal Axios.

U.S. President Donald Trump dramatically stepped up his rhetoric against Iran's supreme leader Tuesday, saying on social media that the United States knows where Ayatollah Ali Khamenei is located but will not kill him "for now."

In another post, Trump also appeared to demand Iran's "UNCONDITIONAL SURRENDER!" as he fueled questions about whether the United States would join Israel's attacks on Tehran's leadership and nuclear facilities.

Six weeks after Spain and Portugal suffered a massive power outage, authorities in Madrid issued an official report Tuesday, saying April's cascading blackout that left tens of millions disconnected in seconds was caused by technical and planning errors that led to the grid's failure.

Spain's Ecological Transition Minister Sara Aagesen, who manages the nation's energy policy, said in a press conference that small grid failures, concentrated in the south of Spain, led to a chain reaction among larger ones, while completely ruling out questions about a cyberattack.

President Donald Trump in about eight hours went from suggesting a nuclear deal with Iran remained "achievable" to urging Tehran's 9.5 million residents to flee for their lives as he cut short his visit to an international summit to return to Washington for urgent talks with his national security team.

Trump arrived at the White House early Tuesday at a moment of choosing in his presidency. Israel, with five days of missile strikes, has done considerable damage to Iran and believes it can now deal a permanent blow to Tehran's nuclear program — particularly if it gets a little more help from the Republican president.

Israel stunned and hobbled Iran last week when it pulled off an intelligence and military operation years in the making that struck high-level targets with precision.

Guided by spies and artificial intelligence, the Israeli military unleashed a nighttime fusillade of warplanes and armed drones smuggled into Iran to quickly incapacitate many of its air defenses and missile systems. With greater freedom to fly over Iran, Israel bombarded key nuclear sites and killed top generals and scientists. By the time Iran mustered a response hours later, its ability to retaliate — already weakened by past Israeli strikes — was greatly diminished.

There appear to have been "direct impacts" on the underground part of Iran's Natanz nuclear site during Israel's attacks, the U.N.'s atomic watchdog said on Tuesday.

"Based on continued analysis of high resolution satellite imagery collected after Friday's attacks, the IAEA has identified additional elements that indicate direct impacts on the underground enrichment halls at Natanz," the International Atomic Energy Agency said on X, formerly Twitter.

Iran's Revolutionary Guards said they struck a center of Mossad, Israel's foreign intelligence service, in Tel Aviv on Tuesday, amid an escalating air war between the two foes.

In a statement aired on state television, the Guards said they "struck the military intelligence centre of the Zionist regime's army, Aman, and the Zionist regime's terrorist operations planning centre, the Mossad, in Tel Aviv", adding it was "currently on fire".

U.S. President Donald Trump said Tuesday he was aiming for a "real end" to the conflict between arch-rivals Israel and Iran, and not just a ceasefire.

"I'm not looking for a ceasefire, we're looking at better than a ceasefire," Trump told reporters on board Air Force One before arriving back in the United States from a G7 summit in Canada.