KHOR MOR, Iraq -- About 65 tankers a day rumbled over the muddy green hills of northern Iraq in late January, dodging potholes and tractors as they hauled natural gas liquids on the first leg of their trip across the Turkish border. The truckloads of gas condensate barreled toward a market that bisects Europe and Asia, inflaming tensions between the semiautonomous Kurdish government that runs the northern part of Iraq and Iraq's central government in Baghdad.