Army force supported by sons Anbar tribes , started today a new military operation to purge Khalidiyah area east of Ramadi, from insurgents of Daish organization elements.A security source said t NINA : "The joint forces, backed by military helicopters , clashed with a number of gunmen in Khalidiyah area eastern Ramadi.He added: " four of Daish elements killed and / 9 others arrested. He added : " military helicopters shells burned during the operation, 13 vehicles used by the insurgents ."