How many Olympic medals did Opec win? The answer (though I’ll bet no one else has bothered to work this out) is 15, or an average of 1.07 medals per member of the world’s leading oil-producer cartel. That result — boosted, I should add, by the five-medal triumph of the Iranian wrestling team — compares with the now notorious aggregate figure of 325 for the EU, including Team GB’s 67.