Turkish President Recep Tayyip Erdogan (R) and Russian President Vladimir Putin (L) shake hands after a joint press conference following their meeting at the Presidential Complex in Ankara on September 28, 2017. The Russian President and his Turkish counterpart on September 28 agreed to push for the creation of a "de-escalation" zone in Syria's key northern province of Idlib to help end the civil war. / AFP PHOTO / ADEM ALTAN