In announcing the strikes in Iraq, the US warned that further attacks on American troops or Saudi Arabia's energy infrastructure risked additional action. Advertisement AdvertisementAdvertisement AdvertisementIran launched its ballistic missile attack before US and Saudi forces carried out strikes in Iraq, according to an American official, who stressed that the two attacks were not connected. Advertisement AdvertisementAdvertisement AdvertisementIt comes after Riyadh said on Tuesday that it had shot down drones fired by Iran-backed militias in Iraq for a second day. The Islamic Resistance in Iraq, an umbrella group of Iran-backed armed groups, called the Saudi claims "fabrications" and implied that Monday's attacks were carried out by the Houthis, who had themselves claimed to have attacked Saudi oil facilities. Advertisement AdvertisementAdvertisement AdvertisementThe Houthis claimed to have fired missiles at the Saudi oil tanker NCC Ghazal, forcing it to turn back.