Excerpt:
Europe faces a "populist uprising" if it is unable to show people it can control the migrant crisis, former MI6 head Sir Richard Dearlove has said.
He was speaking on the BBC's World on the Move day on migration issues.
Sir Richard also warned against offering visa-free travel to Turkish nationals, describing the move as like storing gasoline near a fire.
Earlier, UN special envoy Angelina Jolie Pitt warned the humanitarian system for refugees was breaking down.