Displaced Sunni Iraqis, who fled the violence in the Iraqi city of Ramadi, arrive at the outskirts of Baghdad, on April 19, 2015. More than 90,000 people have fled fighting between pro-government forces and the Islamic State jihadist group in the Ramadi area of Iraq's Anbar province, the United Nations said. AFP PHOTO/AHMAD AL-RUBAYE (Photo credit should read AHMAD AL-RUBAYE/AFP/Getty Images)
Iraqi security forces and gunmen rest on a sidewalk following clashes with jihadists on September 19, 2014, in Ramadi, the capital of the western province of Anbar. On September 17, a suicide car bomb destroyed a key bridge in Ramadi, a city west of Baghdad where the support of Sunni tribes is seen as vital to any nationwide fightback against the jihadists. AFP PHOTO/AZHAR SHALLAL (Photo credit should read AZHAR SHALLAL/AFP/Getty Images)
ARLINGTON, VA - MAY 07: Secretary of Defense Ash Carter speaks to the media during a briefing at the Pentagon May 7, 2015 in Arlington, Virginia. Secretary Carter talked about various issues including the situation in the Middle East and the Department of Defense budget request. (Photo by Mark Wilson/Getty Images)
ARLINGTON, VA - MAY 07: Secretary of Defense Ash Carter speaks to the media during a briefing at the Pentagon May 7, 2015 in Arlington, Virginia. Secretary Carter talked about various issues including the situation in the Middle East and the Department of Defense budget request. (Photo by Mark Wilson/Getty Images)
