The United Nations' nuclear watchdog chief says he does not believe the war in Iran can entirely eliminate the nation's nuclear program, even if the main facilities are heavily damaged.
And Iran confirmed a third senior official killed by Israel in about 24 hours.
Iran retaliated to Israel's killing late Tuesday of the head of the Supreme National Security Council with missile attacks at Israel overnight, killing two people near Tel Aviv.
Health authorities have reported about 1,300 killed in Iran, 968 in Lebanon and 16 in Israel since the war began on Feb. 28. U.S. Central Command has said 13 U.S. service members have been killed and eight severely injured. Several Gulf Arab countries have also reported lower fatalities.
Rafael Mariano Grossi, director-general of the International Atomic Energy Agency, says he believes some part of Iran's nuclear program will remain, even after the heavy damage done by U.S. and Israeli military strikes.