Russia overtakes Saudi Arabia as top oil supplier to China
Cheap and discounted crude from Russia the major attraction
Read MoreCheap and discounted crude from Russia the major attraction
Read MoreThere are dire implications for both oil markets and global trade
Read MoreBuyers now have more options for crude oil purchases
Read MoreThe U.S. is becoming less reliant on OPEC thanks to shale oil and Canada and Mexico
Read MoreAnalysts divided as economic factors and U.S. output surge take centre stage
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