Colombia&#x27;s President Juan Manuel Santos with his wife Maria Clemencia de Santos and their children Maria Antonia Santos (L), Esteban Santos (2 L), Martin Santos (R) pose for photographs with Britain&#x27;s Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall at Clarence House on November 1, 2016 in London, England. The President of the Republic of Colombia Juan Manuel Santos and his wife Maria Clemencia Rodriguez de Santos are paying their first S...