BREAKING Hamas leader Yahya Sinwar was killed by Israeli forces in the Gaza Strip on Thursday, the Israeli foreign minister said.

BREAKING: Hamas leader Yahya Sinwar was killed by Israeli forces in the Gaza Strip on Thursday, the Israeli foreign minister said. Sinwar was credited as the mastermind behind the Oct. 7, 2023, attack on Israel that led to the deaths of 1,200 people, the worst terrorist attack in Israel's history. ABC News' Tom Soufi Burridge reports from Tel Aviv: "It's clearly a very, very big moment. People are celebrating in Israel tonight."