Hamas' top political leader has been killed

Hamas' top political leader has been killed in an airstrike in Tehran, and Hamas and Iran blame Israel. The U.S. and other nations are scrambling to prevent an all-out regional war. Iran's supreme leader has vowed revenge against Israel for killing “a dear guest” just hours after Ismail Haniyeh attended the inauguration of Iran's new president. Israel has kept silent about the strike. But it has vowed to kill Haniyeh and other Hamas leaders over the group’s Oct. 7 attack on Israel that killed 1,200 people. Haniyeh’s killing could prompt Hamas to pull out of negotiations for a cease-fire.