Purpose? Expert?

Courtesy of England Expects, I am directed to this.

Picking up on the central question posed by EE, if anyone can answer the question 'What is the purpose of the European Union' they will have solved the 'Conundrum Of All Time', hereinafter known as 'COAT'.

Possibly an even more unanswerable 'COAT' is this: David Miliband - Expert?