An OPEC sign hangs outside the OPEC Secretariat as night falls during the 175th Organization Of Petroleum Exporting Countries (OPEC) meeting in Vienna, Austria. (Photographer: Stefan Wermuth/Bloomberg)

As Oil Price Gyrates, Saudis and Russia Uncertain of Response

(Bloomberg) -- Oil prices are slumping and surging from one day to the next, and the two most powerful members of the OPEC+ coalition are yet to come up with a unified response.