New series 1/10. Genghis Khan. The life of Genghis Khan was epic by anyone's standards - he created the largest empire known to humanity. But can you be great and leave so much destruction in your wake? American commentator Joe Oueenan argues the case for the mighty manslayer. Khan's biographer John Man is on hand for expert advice. Francine Stock takes the chair for the biographical series in which the living nominate the dead. Producer Miles Warde