Chris Mason: Dissent fizzes again at the top of the Labour Party

Defence Secretary John Healey resigned on Thursday, stating that the military spending level proposed by the Prime Minister 'falls well short' of what is needed. New Defence Secretary Dan Jarvis will have to explain this embarrassment to NATO allies. Armed forces minister Al Carns also resigned in a bizarre turn. Sir Keir Starmer faces leadership challenges from Andy Burnham, Wes Streeting, and others.