A pre-Baath Syrian flag, now used by the Syrian opposition, hangs in a heavily damaged classroom after a barrel bomb hit a school in Syria's northern city of Aleppo Saif al-Dawla district, where control is split between the Syrian regime and opposition, on May 3, 2015. At least seven civilians, including a teacher and four children were killed, the Britain-based Syrian Observatory for Human Rights said. AFP PHOTO / BARAA AL-HALABI (Photo credit should read BARAA AL-HALABI/AFP/Getty Images)
