CNBC | US crude closes 3.45 pct lower, at $43.16, marking a 3-week low CNBC Oil prices rose as much 11 percent in August, posting their best monthly return since April, on speculation that the Organization of the Petroleum Exporting Countries and other producers might agree on curbing output at Sept. 26-28 talks in Algeria ... Oil futures drop over 2% as supply concerns build Oil Prices Slide as Oversupply Comes Back into Focus Oil slides on glut worry, on track for biggest weekly drop since Jan |