Israeli Prime Minister Benjamin Netanyahu says the man believed to be the head of Hamas’ armed wing, Mohammed Sinwar, has been killed, apparently confirming his death in a recent strike in the Gaza Strip. There was no confirmation from Hamas. Sinwar is the younger brother of Yahya Sinwar, the Hamas leader who helped mastermind the Oct. 7, 2023, attack that started the Israel-Hamas war. He was killed by Israeli forces in October 2024. Israeli strikes have decimated Hamas’ Gaza leadership during the 19-month war. But the militant group has maintained its rule over the parts of Gaza not seized by Israel and still holds dozens of hostages.