The US Embassy in Baghdad has concluded that Iranian-backed Iraqi militias were likely behind the attack on a US diplomatic facility near Baghdad International Airport on September 10th. This assessment aligns with an earlier evaluation by the Critical Threats Project at the Institute for the Study of War (CTP-ISW). Read: US CENTCOM Confirms Deaths Of Four Key ISIS Leaders In Joint Raid With Iraqi Forces The attack involved two Katyusha-type rockets, one of which hit an Iraqi Counter Terrorism Service building, while the other landed within the Baghdad Diplomatic Services Compound, a base used…