Bloomberg- Oil ministers from OPEC and its allies are starting to arrive in Vienna for what promises to be one of the cartel’s most contentious meetings in years. (All timestamps CET.)

Iran Says Keep Curbs, While Libya Cuts Involuntarily (11:55am)

OPEC’s No. 3 producer, Iran, urged fellow members to “do nothing about production,” warning that a relaxation of output curbs would swell stockpiles again.

“Increasing production at this time would be an attempt to build stocks,” said Iran’s OPEC governor, Hossein Kazempour Ardebili. “This cyclic play is not accepted!”

Meanwhile, war-torn Libya reported a 400,000-barrel-a-day drop in output after an armed assault on its third-largest port, adding to global supply concerns currently centered on Venezuela and Iran.

Workers at the Ras Lanuf terminal are trying to put out a fire and “stabilize the situation” before the national oil company can “think what to do” about production, Chairman Mustafa Sanalla said in Vienna.