EDITORS NOTE: Graphic content / Syrian forces excavate a site, said to be a mass grave by state news agency SANA, west of Raqa province, on December 29, 2017.
Two mass graves containing dozens of bodies of civilians and Syrian troops killed by Islamic State jihadists have been found in the west of Raqa province, state news agency SANA reported.
 / AFP PHOTO / George OURFALIAN        (Photo credit should read GEORGE OURFALIAN/AFP/Getty Images)