By Alexander Cornwell, Parisa Hafezi and Jeff Mason TEL AVIV/DUBAI/WASHINGTON (Reuters) -Iranian missiles struck Israel's Tel Aviv and the port city of Haifa in an early morning raid on Monday, destroying homes and fuelling concerns among world leaders at this week's G7 meeting that the battle between the two old enemies could lead to a broader regional conflict.

Aerial attacks between Israel and Iran continued overnight into Monday, marking a fourth day of strikes following Israel's Friday attack. That surprise strike hit the heart of Iran's nuclear program, killing several nuclear scientists as well as high-ranking military leaders, according to Israeli officials.

Mike Huckabee, the U.S. ambassador to Israel, said in a post on X that the U.S. Embassy will remain closed Monday, with an order for staff to shelter in place still in effect. He added that there has been “some minor damage from concussions of Iranian missile hits near Embassy Branch in Tel Aviv,

Israel has multi-layered air defences against attacks by Iran, which has fired hundreds of ballistic missiles and suicide drones at Israel over the past two days as the Middle East rivals traded heavy blows.

The Israeli military has warned that “all of Israel is under fire” after Iran launched retaliatory strikes on Friday, following Israel’s attacks on Iranian military and nuclear targets.

The U.S. military is operating in the air, on land and at sea to shoot down Iranian missiles fired at Israel.

Woken by air raid sirens, hurrying to bomb shelters, scouring travel sites for escape routes — thousands of tourists in Israel have found their holiday plans upended by the country's conflict with Iran.

The Navy is sending the USS Thomas Hudner to bolster air defense systems in the region as fighting between Israel and Iran continues.