The Guardian | Oil prices soar as Saudi king's death fuels market jitters The Guardian Oil prices have more than halved since the summer, when crude was more than $100 a barrel, amid an oil glut and weak global demand. A shale boom in the US has turned the US from the world's biggest oil importer into a major producer, pumping more ... Oil jumps as Saudi king's death feeds market uncertainty What now for oil after Saudi king's death? Death of King Unlikely to Alter Saudi Oil Policy |