The long-running battle for the Parthenon Marbles erupted again this week between Greece and the UK. In this special episode, we explore some of the bitterest and most bizarre diplomatic disputes between otherwise amicable nations. Is the British Museum losing its marbles? What does it take to resolve a conflict with a friendly state? Andrew Mueller speaks to George Parker, John Everard, Alex von Tunzelmann and Jeppe Kofod. 

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