Cause of Mosul Blast under Investigation
The U.S. field hospital of Balad base treats injured from the rocket attack in Mosul. Owen Franken, © Corbis hide caption
Insurgents attack a U.S. mess tent in Mosul Tuesday, killing at least 22 people, most of them American service personnel. The cause of the blast is still uncertain and is under investigation. Hear NPR's Renee Montagne and NPR's Lourdes Garcia-Navarro.