What does Healey's shock resignation mean for the Prime Minister, whose position is already on the line ahead of Andy Burnham's crunch byelection in Makerfield? Who might replace Healey in one of the most important jobs in government, at one of the most dangerous moments in the UK's history? And with NATO allies demanding higher spending on defence and Trump's America growing ever more unpredictable, can Britain afford a government at war with itself? --------------------------------- Social Producer: Celine Charles Assistant Producer: Daisy Alston-Horne Producer: Evan Green General Manager: Tom Whiter