Who was Yahya Sinwar, the Hamas leader Israel says it killed? The Associated PressLive updates: Hamas leader Yahya Sinwar killed in Gaza, Israel says CNNIsraelis and Palestinians brace for what follows Sinwar’s killing in Gaza The Washington PostHow Israel Found and Killed Hamas Leader Yahya Sinwar in Gaza The New York TimesYahya Sinwar threw stick at drone just before death, according to Israel video Reuters