The 171st Organization Of Petroleum Exporting Countries (OPEC) Conference [Getty Images]

From left to right, Mohamed Hamel, chairman of OPEC, Mohammed Al-Sada, Qatar's minister of energy and industry and president of OPEC, Mohammed Barkindo, secretary general of OPEC, and Hasan Hafidh, head of public relations of OPEC, attend a news conference following the 171st Organization of Petroleum Exporting Countries (OPEC) meeting in Vienna, Austria, on Wednesday, Nov. 30, 2016. Oil rose the most in nine months after OPEC ministers were said to have forged a deal to cut production, sending stocks of energy producers and currencies of commodity-exporting nations higher. Photographer: Akos Stiller/Bloomberg via Getty Images

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