Iran and Iranian-backed militias fired missiles at Israel and Arab states, apparently hitting the U.S. Embassy compound in Kuwait, while Israel and the United States pounded targets in Iran as the war expanded on Monday with statements of defiance and increasing casualties.

At least 555 people have been killed in Iran so far by the U.S.-Israeli campaign, the Iranian Red Crescent Society said, and more than 130 cities across the country having come under attack. Eleven people have been killed in Israel, according to authorities there.In Kuwait City, as fire and smoke rose from inside the U.S. Embassy compound, the country's defense ministry said “several” American warplanes had also crashed in the country. The ministry did not elaborate on what caused the crashes or how many aircraft were involved, but said the pilots were taken to a hospital and were in stable condition. The U.S. military did not immediately respond to a request for comment.

The embassy compound was hit not long after U.S. issued a warning to Americans there to take cover and for others to stay away. There were no immediate reports on damage or casualties.

Meantime, as the American and Israeli airstrikes continued, top Iranian security official Ali Larijani vowed on X that “we will not negotiate with the United States.”

In Iraq, a pro-Iranian militia claimed responsibility for a drone attack targeting U.S. troops at the Baghdad airport, the day after it said it fired at a U.S. base in the city of Irbil in the north, and Cyprus said a drone attack targeted a British base on the Mediterranean island nation.

Israel and the U.S. bombed Iranian missile sites and targeted its navy, claiming to have destroyed its headquarters and multiple warships.