How are the mighty fallen! This time a year ago, Prince Harry had the world at his feet. He was a handsome prince with a beautiful wife and a healthy male heir on the way, plenty of money, a free, five-bedroomed ‘cottage’ in a piece of England’s finest real estate, a dashing war record from two tours in Afghanistan, bags of honorary titles — including Captain General of the Royal Marines — all the cachet of being a senior player in the world’s grandest Royal Family but little of the responsibility (his big brother William is heir to the throne,...