In retaliation for attacks on commercial shipping vessels, the US and UK have launched military strikes on Iran-backed Houthi militia targets in Yemen. This follows the US's initial strikes on Iranian Revolutionary Guard facilities in Iraq and Syria, in response to a drone attack that killed three US soldiers in Jordan. The US Navy used fighters from the USS Dwight D. Eisenhower aircraft carrier and warships in the Red Sea to strike at least 30 Houthi targets. The UK supported the operation with its own jets, with Defence Secretary Grant Shapps affirming the action was in self-defence and accordance with international law.