GB News launched almost two years ago, promising to shake up traditional news channels. But as one of its star presenters quits, is the channel in trouble? Also in the programme, a new BBC documentary and podcast about Shamima Begum.Guests: Angelos Frangopoulos, CEO, GB News; Lis Howell, Professor Emeritus of Journalism, City University; Josh Baker, reporter, and Sara Obeidat, producer, The Shamima Begum Story.Producer: Dan HardoonPresenter: Katie Razzall