On the 636th day of James Foley's captivity, and roughly the 1,250th day of Syria's uprising-turned-civil-war, a video surfaced online that claimed to show the Islamic State of Iraq and Syria (ISIS) beheading the American photojournalist, in retaliation for U.S. airstrikes against the Sunni extremist group in Iraq (the militants also threatened to kill the missing American journalist Steven Sotloff, who seems from the footage to be an ISIS captive as well).