Israel said it struck a nuclear site near Tehran on Wednesday, while Iran said it fired hypersonic missiles as the arch foes traded fire for a sixth day.

Hours after U.S. President Donald Trump demanded Iran's surrender, supreme leader Ayatollah Ali Khamenei vowed his country would show "no mercy" towards Israel's leadership.

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.

Iran has banned government officials and their bodyguards from using all communication devices linked to the networks. The ban, announced Tuesday, includes mobile phones, smart watches and laptops.

Iran did not elaborate on the reason for the ban, which was reported by the semiofficial Fars news agency. However, it suggests Iran suspects Israel used digital signatures from electronics to launch its strikes, which have decimated Iran’s military leadership.

Since Israel launched a barrage of strikes on Iran last week and Iran retaliated with missile and drone attacks against Israel, neighboring countries have been in the flight path.

Outside the scope

Air raid sirens sounded in the Tel Aviv area and parts of northern Israel on Tuesday, the military said, after warning of a fresh salvo of incoming missiles fired from Iran.

"A short while ago, sirens sounded in several areas across Israel following the identification of missiles launched from Iran toward the state of Israel," a statement from the military said, with residents of the Tel Aviv area and parts of the north urged to seek shelter.

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 has few viable options for striking back at Israel, largely because its key regional proxy Hezbollah has been "decapitated," according to Fabian Hinz of the International Institute of Strategic Studies, a London-based think tank focusing on defense and security issues.

The Houthi rebels in Yemen, another of Iran’s allies, depend on long-range Iranian missiles but supplies are limited, Hinz said.

Twenty countries denounced in a joint statement the escalating tensions in the Middle East caused by what they term Israel’s aggression against Iran and called for diplomacy and dialogue to restore stability in the region.

“There’s an imperative need to halt Israeli hostilities against Iran, which come during a time of increasing tension in the Middle East, and to work towards de-escalation, to achieve a comprehensive ceasefire and restoration of calm,” read the statement.