LINK TO ARTICLE Assuming the estimation of the intended targets and measurements are realistic, an Iranian missile accuracy ranging on average between 2.5 and 19.5 m is very impressive to say the least and indicates the use of advanced terminal guidance technology (guiding a missile in its terminal phase). Reports have suggested that the Fateh-313 tactical short range ballistic missile (SRBM) was used in the Ayn Al Asad Airbase attack, with other reports suggesting that the Qiam 1 was also used in the attack, including on Erbil Airport. The Fateh-313 is an upgraded Fateh-110, with an increased missile range up to 500 km. Terminal guidance technologies are most likely to be combined, including inertial guidance systems (INS), GNSS systems and possibly electro-optical guidance.