Imagine what would happen if America barged its way into a developing country, buttered up its homicidal dictator and agreed a back-of-the-envelope deal in which he signed over his nation’s mineral wealth in return for roads, railways and sports stadiums. Everyone would benefit, no? No. The problem is that the infrastructure turns out to be worth a hell of a lot less than the minerals. Fortunately, Washington has had the foresight to top up the dictator’s Swiss bank account. Problem solved! As for the mining operation, the Americans really don’t want to be bothered by minimum wages or trade unions....