Total Recall: What happens when diplomatic relations turn sour?

France has recalled its ambassadors to the US and Australia as a response to the new AUKUS deal and Australia’s cancellation of a French submarine contract. But what do such gestures really mean? Do some countries just want to make a scene? How does a diplomatic spat actually work? Andrew Mueller speaks to Agnès Poirier, Quentin Peel and John Everard.