The article discusses the relations between Sunni and Shia, which are the two largest ethnic groups in Iraq. It mentions that the conflict fueled by the anger of Sunni in 2012 is reflecting the historic political tensions between the former and Shia. It adds that the militant action of the tribal leaders of Sunni in Anbar during the encroachment Al Qaeda on their territory in the winter of 2013 is one example an ethnic conflict fueled by the distrust of people on the Iraqi government.