CNBCOPEC oil minister: We 'have no choice' on outputCNBCWeak global demand and booming U.S. shale oil production are seen as two key reasons behind the price plunge, as well as OPEC's reluctance to cut its output. OPEC is next due to meet in Ju …

CNBCOil touches six-year low as Iran talks weighCNBCStorage worries plague oil sector. Kevin Book, Clearview Energy Partners, discusses the outlook on oil, as crude nears 6-year lows and concerns surface prices will continue to get squeezed if sanctions ag …

CNBCOil at 6-year low as Iran talks weighCNBCStorage worries plague oil sector. Kevin Book, Clearview Energy Partners, discusses the outlook on oil, as crude nears 6-year lows and concerns surface prices will continue to get squeezed if sanctions against I …