BAGHDAD, July 5, 2016 (Xinhua) -- A man cries over his son killed in Sunday's car bombing attacks in Karrada-Dakhil district in southern Baghdad, Iraq, on July 5, 2016. Iraq began on Monday a three-day national mourning for victims of Sunday's car bombing attacks in the capital city of Baghdad, as the death toll rose to 166. (Xinhua/Khalid Davood)