Who was Yahya Sinwar, the Hamas leader Israel says it killed? The Associated PressYahya Sinwar, leader of Hamas, killed by Israeli forces in Gaza BBC.comFor Biden, Sinwar’s death injects uncertainty — but also an opening — into resolving Gaza conflict CNNLive updates: Hamas leader Yahya Sinwar killed in Gaza, Israel says NBC NewsJohnson: Slain Hamas leader’s life was ’embodiment of evil and marked by hatred’ The Hill