Defense Secretary Ash Carter testifies on Capitol Hill in Washington earlier this month. In an interview on CNN Sunday, Carter complained that Iraqi forces lacked "the will to fight" the self-declared Islamic State. Manuel Balce Ceneta/AP hide caption

itoggle caption Manuel Balce Ceneta/AP

A carry team at Dover Air Force Base trains on the proper protocol for a dignified transfer. Ariel Zambelich/NPR hide caption

itoggle caption Ariel Zambelich/NPR

Former Defense Secretary Robert Gates at the Boy Scouts of America's annual meeting in 2014. "There's no certainty about any of this," he says of the situation in Iraq. Mark Zaleski/AP hide caption

itoggle caption Mark Zaleski/AP

The State Department is releasing 296 emails from Hillary Clinton's email account during her tenure as secretary of state. The correspondence relates to the attack on the U.S. consulate in Benghazi, Libya. M. Spencer Green/AP hide caption

itoggle caption M. Spencer Green/AP