Demand for oil has dropped dramatically as the market has been flooded with barrels of crude, which are trading at just under $20.
Elizabeth Warren and Joe Biden more and more competitive in farm country
China is North Korea's top trading partner and most important ally.
Arab-Gulf oil ministers want media to present policy in a positive way after oil price coverage.
£1.3 billion promised to boost investment in oil and gas by British chancellor in final pre-election budget.