Oil rises on trade talk optimism and signs of robust US demand

The silhouettes of pumpjacks are seen above oil wells in the Bakken Formation near Dickinson, North Dakota, U.S., on Wednesday, March 7, 2018.
The silhouettes of pumpjacks are seen above oil wells in the Bakken Formation near Dickinson, North Dakota, U.S., on Wednesday, March 7, 2018.

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