Is Syria's Largest Dam Water-tight?

US-backed forces have paused their offensive against the so-called IS-stronghold of Raqqa to allow engineers to inspect the strategic Tabqa Dam. IS fighters claimed coalition air strikes had jammed the dam's gates, causing water levels to rise dangerously, potentially risking the lives of thousands of people.

Also in the programme: The civilian cost of the battle for Mosul; Thieves steal gold coin weighing 100 kilogrammes.

(Photo: Tabqa Dam near Raqqa. Credit: Reuters)