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

A Houthi source told Newsweek that any attack on Iran "will drag the entire region into the abyss of war" amid escalation tension.

Iran has told mediators Qatar and Oman that it is not open to negotiating a ceasefire while it is under Israeli attack, an official briefed on the communications told Reuters on Sunday, as the two foes launched fresh attacks and raised fears of a wider conflict.