Reuters | Oil edges up at settlement as supply questions vex market Reuters Oil prices are on track for their fourth consecutive quarterly gain, the longest such stretch for more than 10 years, boosted largely in the past month by fears of disruption in supplies from Iran, which pumps about 4 percent of the world's oil and ... Oil Markets Tremble On Iran, Israel Flare-Up Stocks jump and oil soars to fresh multi-year highs Oil surges to a fresh high as Middle East tensions spark violence |