The Globe and Mail | Oil prices jump as traders re-evaluate Iran deal The Globe and Mail Brent crude tumbled nearly 4 per cent on Thursday after Iran and six world powers announced a framework agreement on the OPEC member's nuclear program. But initial expectations of a quick recovery in oil exports were tempered by views that it could ... Crude Oil Rises to One-Week High as Saudis Boost Pricing to Asia What determines if oil prices go up or down? Oil ticks back over $50 as Saudis hike prices to Asian market |