Reuters | Oil at three-week high ahead of OPEC decision on output Reuters Brent crude oil has risen 11 percent in a week since Saudi Arabia, the de facto leader of the Organization of the Petroleum Exporting Countries, started a diplomatic charm offensive to persuade the group's more reluctant members to join its proposed ... Wall St. Rises on Oil Prices Oil rallies after Putin voices support for output curb Oil Rises as Iran, Iraq Signal Hope of Deal Before OPEC Meeting |