Oil futures ended lower Thursday after three consecutive session gains. Crude prices weakened as the “king dollar” returned, and after Russia slashed “any Saudi hope of delivering another production cut at the June 4th meeting,” said Edward Moya, senior market analyst at OANDA. July West Texas Intermediate crude CLN23 fell $2.51, or 3.4%, to settle at $71.83 a barrel on the New York Mercantile Exchange after gaining 2% Wednesday.

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