The U.S. State Department has not warned or notified BP in any way about its role as a substantial shareholder in Russia’s Rosneft after Secretary of State Mike Pompeo accused Rosneft of buying Venezuelan crude despite U.S. sanctions against the country, TASS reports. "I haven’t read it, I haven’t heard it, so I really wouldn’t be able to comment," Dudley said on the sidelines of CERAWeek. "I did not actually hear about that."Earlier this week, Mike Pompeo accused Rosneft of defying U.S. sanctions against Caracas by continuing…