In announcing the strikes in Iraq, the U.S. warned that further attacks on American troops or Saudi Arabia’s energy infrastructure risked additional action. Saudi Arabia and US strike Iran-backed militias in IraqIran launched its ballistic missile attack before American and Saudi forces carried out strikes in Iraq, according to a U.S. official, who stressed that the two attacks were not connected. Saudi Arabia said Tuesday that it shot down drones fired by Iran-backed militias in Iraq for a second day, while Iran-backed Houthi rebels in Yemen claimed to have forced a Saudi oil tanker to turn around as part of their self-styled blockade of the kingdom. A Saudi oil tanker is targetedThe Houthis claimed to have fired missiles at the Saudi oil tanker NCC Ghazal, forcing it to turn back. The rebels fired on at least one Saudi tanker in the Red Sea last week.