Bloomberg | Oil Rises After Fourth Weekly Decline as Supply Risks Persist Bloomberg Three oil fields in the North Sea are winding down output before industrial action starts later Monday, a labor union said. Tensions in the Middle East remain high as the U.S. reimposes sanctions on Iran, while Saudi Arabia halted shipments via a key ... Mysterious Attack on Saudi Oil Tanker Heats Up US-Iranian Front Is oil set to move even higher? There are 4 key chokepoints for oil |