Revisiting Raqqa 2017. Quentin Somerville for the BBC showing how 4000 battle hardened ISIS fighters were let out of Raqaa and transported to Turkey under the aegis of the US and the SDF.
https://www.youtube.com/watch?time_continue=58&v=5SDq8OTIvnc&feature=emb_logohere.https://www.youtube.com/watch?time_continue=58&v=5SDq8OTIvnc&feature=emb_logo