OPEC pursues oil supply war – who has the firepower?

An oil pumping jack, also known as a 'nodding donkey,' operates in a snow covered oilfield in the village of Otrada, 150kms from Ufa, Russia.
An oil pumping jack, also known as a 'nodding donkey,' operates in a snow covered oilfield in the village of Otrada, 150kms from Ufa, Russia.

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