With its legal oil export avenues cut off by the end of all U.S. sanction waivers for its crude oil buyers, Iran has recently resumed illicit shipping of oil to Syria, CNBC reported on Thursday, citing data from tanker tracking firms. TankerTrackers for example said today that “We spotted the first delivery of Iranian crude oil into Syria since January 1st of this year. A million barrels arrived on May 5th.” Both TankerTrackers and ClipperData have spotted a delivery of around 1 million barrels of crude oil from Iran into the Syrian…