Raqqa's Dirty Secret

A BBC investigation in Syria has established that 250 Islamic State fighters were allowed to escape unharmed from the city of Raqqa when it was recaptured last month by American-backed militias. The fighters were among about 4000 people who withdrew in a convoy shortly before it fell. We hear from our Our Middle East correspondent, Quentin Somerville, who as been in Raqqa.

Also on the programme: The latest on the deadliest quake to hit this year, hundreds are dead in Iran. And Artist Jeremy Deller helps Newcastle recreate Martin Luther King speech.

(A view of a part of downtown Raqqa after it was liberated from the Islamic State militants, in Raqqa, Syria. Credit:Reuters)