The system allowed individuals and companies to use Iraq's UN-controlled oil-for-food programme to purchase Iraqi oil at concessionary prices and resell it, splitting their huge profits with Saddam Hussein, the Iraqi leader. Under the programme, the Iraqi regime had to sell its oil under international supervision but could choose its own middlemen. Those intermediaries, invariably sympathetic to Saddam and his money, paid for the oil into a United Nations account at prices agreed by Baghdad. That money was in turn used by the UN to buy food, medical supplies and other essential goods for Iraq. The purpose of the system...