26. By the time ISIS entered Sinjar, there were few military objectives in the region. ISIS fighters focussed their attention on capturing Yazidis. After controlling the main roads and all strategic junctions, fighters set up checkpoints and sent mobile patrols to search for fleeing Yazidi families. Within hours, Yazidis who had been unable to escape to the nearby city of Duhok found themselves encircled by armed, black-clad ISIS fighters.