The Palestinian extremist group Hamas has confirmed the death of its leader Yehya al-Sinwar, considered the mastermind of the October 7 attacks on Israel. Israeli forces announced Thursday they had killed al-Sinwar in Gaza, ending a year-long manhunt. Khalil al-Hayya, the deputy head of Hamas’ political wing, on Friday told Hamas-run Al-Aqsa broadcaster that he mourned the death of the “martyr” al-Sinwar. The Israel Defense Forces (IDF) previously released a video showing what it said were al-Sinwar’s final moments. The footage, recorded by a drone, shows a man sitting in a bombed-out building…