The United States has warned China after reports that Beijing told its independent refineries to disregard U.S. sanctions on purchases of Iranian crude.The dispute centres on Iranian oil sales and the pressure campaign around them.The only confirmed detail in the supplied material is that China instructed its independent refineries to ignore the sanctions.The warning adds to an already tense sanctions confrontation involving the United States, China and Iran.No casualties or physical disruption are reported in the supplied row.The issue matters because Iranian crude purchases have long been a point of friction in wider U.S.-China relations, and the latest move suggests... [Continue Reading]