Britain's Prince Phillip (2nd L), his grandson Prince William (4th L) and William's wife Catherine, Duchess of Cambridge (2nd R), Britain's Prime Minister David Cameron (R) and his wife Samantha (C in red), Monaco's Prince Albert (2nd row from the front) and his wife Princess Charlene attend the opening ceremony of the London 2012 Olympic Games at the Olympic Stadium July 27, 2012. [Photo/Agencies]