Marine A: first TV interview with his former commanding officer

A marine serving a life sentence for the murder of an injured Afghan fighter has been refused bail pending a re-hearing of his trial. Sergeant Alexander Blackman had his case referred for appeal after new evidence came to light about his mental health at the time of the killing. But tonight this programme has new testimony from his former commanding officer in Helmand. He tells us of his warnings about the wider unit that went unheeded and speaks of a lack of leadership leading up to the Blackman killing.