Israel says it has killed Hamas leader Yahya Sinwar in Gaza The Associated PressLive updates: Hamas leader Yahya Sinwar killed in Gaza, Israel confirms CNNSandra Smith questions if the death of Hamas leader will lead the group to ‘crumble,’ or if a more ‘radical’ leader will step in? Fox NewsSurprise Battlefield Encounter Led to Hamas Leader’s Death The New York TimesSinwar’s killing opens up opportunity and much uncertainty for the war in Gaza The Associated Press