"We've recruited a significant number of new staff who have direct experience in major investigations, changed the ways we prioritise cases, introduced thorough investigative process which are subject to ongoing and systemicreview and we've developed a consistent approach to communication for the families, " he said.
Clinton acknowledged the "systemic breakdown" cited by an Accountability Review Board she appointed and noted she had accepted all 29 of its recommendations, adding her department was taking additional steps to increase security at U.S. diplomatic facilities around the world.