WINNING THE WOT:

Saudi Arabia lost market share in more than half of the most important countries it sold crude to in the past three years, even as the kingdom increased output to record levels.

The world's biggest oil exporter lost ground to rivals in nine out of 15 top markets between 2013 and 2015, including China, South Africa and the US, according to an analysis of customs data. [...]

"Saudi Arabia has had a very difficult time selling oil in this environment," says Ed Morse, an analyst at Citigroup. "Its rivals are going into a very crowded market in a very aggressive way."

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