He masterminded the bloodiest day in Israel's history. One year and one week later comes news that Hamas leader Yahya Sinwar has been killed. Before October 7, much of the planet knew only the names and faces of Hamas's political leadership in exile, but that all changed when the 62-year-old native of Khan Younis launched the devastating attacks from Gaza. We ask if Sinwar's demise is a turning point for the war and if it will bring any hope of a ceasefire in Gaza.