Reuters | Oil down over 2 percent; more doubt producer output freeze Reuters Oil prices remain up about 40 percent from around 12-year lows struck in mid-February, although the rally has fizzled on growing skepticism about a proposed output freeze by major producers. "It appears that the speculative longs that were enticed ... Iran ramped up production massively last month — and oil took a huge dive Oil prices fall on dimming prospect of output restraint Oil prices fall on dimming prospect of output restrain |