ReutersOil up in choppy trade as OPEC heavyweights head to ViennaReutersLONDON Oil prices gained more than two percent on Monday in volatile trading after falling as much as two percent, recouping losses as the market reacted to the shaky prospect of major …

ReutersOil prices gyrate as OPEC heavyweights head to ViennaReutersIt could still imply an OPEC production level considerably in excess of 33 million bpd, depending on developments in Libya and Nigeria and the speed and rigor of compliance," David Huf …