Saudi Arabia is threatening to sell its oil in currencies other than the dollar if Washington passes a bill exposing OPEC members to U.S. antitrust lawsuits, three sources familiar with Saudi energy policy said.  They said the option had been discussed internally by senior Saudi energy officials in recent months. Two of the sources said the plan had been discussed with OPEC members and one source briefed on Saudi oil policy said Riyadh had also communicated the threat to senior U.S. energy officials. The chances of the U.S. bill known as NOPEC coming into force are slim and Saudi Arabia would be unlikely to follow through, but the fact Riyadh is considering such a drastic step is a sign of […]