The U.S. was represented at the UN Security Council's emergency session on Friday by State Department Senior Bureau Official McCoy Pitt, who said the U.S. was advised by Israel that the actions carried out against Iran overnight were "necessary for its self-defense."

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.

Israel unleashed airstrikes across Iran for a third day Sunday and threatened even greater force as some Iranian missiles evaded Israeli air defenses to strike buildings in the heart of the country. Planned talks on Iran’s nuclear program,