Hamas vowed on Friday it would not release the hostages it seized during its October 7 attack on Israel until the Gaza war ends, as it mourned the death of its leader, Yahya Sinwar.“We mourn the great leader, the martyred brother, Yahya Sinwar, Abu Ibrahim,” Qatar-based Hamas official Khalil al-Hayya said in a recorded video statement.The hostages “will not return... unless the aggression against our people in Gaza stops, there is a complete withdrawal from it, and our heroic prisoners are released from the occupation’s prisons,” he added.For the latest updates on the Israel-Palestine conflict, visit our dedicated page.Hamas’s confirmation of the death of Sinwar, the mastermind of the deadliest attack in Israeli history, came a day after Israel dealt a massive blow to the group with the announcement of his death.Hamas sparked the year-long war in Gaza by staging the deadliest-ever attack on Israel on October 7, 2023, resulting in the deaths of 1,206 people, mostly civilians, according