US President Barack Obama delivers a statement on Afghanistan with Defense Secretary Ashton Carter (L) and the Chairman of the Joint Chiefs of Staff Gen. Joseph Dunford at the White House in Washington, DC, on July 6, 2016. Obama announced that 8,400 US troops will remain in Afghanistan into 2017 in light of the still "precarious" security situation in the war-ravaged country. / AFP PHOTO / NICHOLAS KAMMNICHOLAS KAMM/AFP/Getty Images