Yahoo Finance | Oil prices edge up on Iran tensions, but rising US drilling caps gains Yahoo Finance By Henning Gloystein. SINGAPORE (Reuters) - Oil prices edged up on Monday on fears that new U.S. sanctions against Iran could be extended to affect crude supplies, but markets were capped by further signs of growing U.S. production. Tensions between ... Oil's Promised Land Slips Away on OPEC Leaks Oil prices edge up on Iran tensions, but rising shale output caps gains US May Export More Oil Than 4 OPEC Producers |