In March, Sens. Chris Murphy, D-Conn., and Elizabeth Warren, D-Mass., asked Defense Secretary Lloyd Austin to open a new investigation into the airstrike that disabled Al Manthari, as well as 11 other U.S. attacks in Yemen. The Pentagon did not respond to repeated requests for comment on what actions, if any, Austin has taken in response to the request. In a letter to Murphy and Warren shared with The Intercept, Colin H. Kahl, the Pentagon’s top policy official, did not even address the issue of new investigations.