Henning Gloystein, Reuters
Oil prices slide on concerns of a sharp economic slowdown
China's tariffs on US oil could disrupt booming business
Oil prices rise as Opec seen continuing supply cuts through 2018
Oil prices fall as Iranian crude tanker exports surge
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Stumbling dollar, Nigeria sabotage push up oil prices
Oil prices tumble after Saudi-Iran tensions sink output deal
Oil dips as oversupply outweighs Saudi reshuffle
Brent crude drops below US$50 for first time since 2009
