On the banks of the Shatt al-Arab in southern Iraq, a family business is thriving. For the Ashur, a small clan of 50 families, it's worth several million dollars a week. Costs are steep, especially for security. But profits are tidy and business is booming. The Ashur smuggle oil. For years under Saddam Hussein, they worked as mere guards at Abu Flus terminal at the mouth of the Gulf.