“I spent a restless night on a cot surrounded by dozens of strange men inside the headquarters of the Mosul Civil Defense Unit. In the minutes between dark and daylight, we boarded trucks to make the drive to Tel Afar. The unit had received information that two mass graves containing at least twenty bodies were submerged beneath slabs of concrete and decomposing in the sewage system of the former ISIS bulwark — a sickening reminder of the lasting devastation caused by the group’s three-year occupation of northern Iraq”