A man carries a young girl who was injured in a reported barrel-bomb attack by government forces on June 3, 2014 in Kallaseh district in the northern city of Aleppo. Some 2,000 civilians, including more than 500 children, have been killed in regime air strikes on rebel-held areas of Aleppo since January, many of them in barrel bomb attacks. / AFP PHOTO / BARAA AL-HALABI (Photo credit should read BARAA AL-HALABI/AFP via Getty Images)
