A bus carrying the rebels and their families from Douma district arrives at the Wafideen area, northeast of the capital Damascus, Syria, on April 14, 2018. Around 93 buses with hundreds of Islam Army militants and their families onboard prepared on Friday to evacuate Damascus' eastern Douma district, amid reports of the arrival of the chemical weapons investigators on Saturday to look into allegations of toxic gas use in Douma. (Xinhua/Ammar Safarjalani)