Opposition fighters backing Turkish troops drive past stones blocking a road in the village of Hazwan on the outskirts of the Syrian town of al-Bab as they advance towards the town which is the last stronghold of the Islamic State (IS) group in Syria's Aleppo's province on February 12, 2017. 

Turkish troops backed by Syrian rebel fighters have entered the centre of the Islamic State group bastion of Al-Bab and will soon capture it, President Recep Tayyip Erdogan said Sunday. / AFP / Rafat AHMAD        (Photo credit should read RAFAT AHMAD/AFP/Getty Images)