A rocket attack on Camp Taji, Iraq, that killed two U.S. troops and a British medic was likely carried out by an Iranian-backed militia, and signaled Tehran's continuing activities aimed at driving the U.S. from the region. About 18 of the 107mm Katyusha rockets struck the base in the attack.
Marine Gen. Frank McKenzie, head of U.S. Central Command, said the U.S. is still working to identify those responsible for Wednesday's attack on Camp Taji. It was most likely a Shia group supported by Iran.
U.S. and British officials have pledged a response to the attack, but gave no indication of what form it might take.
A military force that is raised from the civil population to supplement a regular army in an emergency.
A missile that obtains thrust from a rocket engine.
Iraqi security forces later found a truck rocket launcher a few miles from the base.