Hasta la vista, Boris

It's all happening against his wishes, but Boris Johnson's reign as the British leader has come to an end.  He had wanted to go down in the history books like his hero, Winston Churchill, but instead he’s leaving Downing Street with an uninspiring record.  Today, the chief political commentator for The Independent newspaper in London, John Rentoul, on Boris Johnson's chequered legacy, and the challenges for his likely successor.  Featured:  John Rentoul, chief political commentator, The Independent newspaper, London