USA TODAY | Why OPEC deal may not increase oil prices USA TODAY Gleaning insight into the direction of the Organization of the Petroleum Exporting Countries is a favored parlor game of the oil markets, as evidenced by three separate incidents recently in which oil prices spiked on hopes of a production cut. But ... Oil down 3 percent as optimism over Saudi, Russia deal cools Oil prices jump again on hope of supply cut Saudi oil minister to meet Russian counterpart |