Adding to the ways in which we can help the countries of the Sounth, ‘travel not Aid’ seemed a good new slogan. But in a globalised world, does the reality live up to the intentions?

There’s a famous scene in Casablanca where the police chief, Captain Renault, arrives to close Rick’s cafe and announces: “I’m shocked, shocked to find that gambling is going on in here!” A croupier hands him a bundle of notes: “Your winnings, sir.” Renault pockets the cash and orders: “Everybody out at once!” In the financial scandal surrounding the fraudulent fixing of the London Interbank Offered Rate (Libor), it is hard to see who is the corrupt policeman since there are so many likely (...)