Hadley says Saudi officials argue that higher prices are driven more by uncertainty in the global market and the lack of refining capacity for the quality of oil most readily available.

• 哈德利说，沙特阿拉伯官员认为，石油价格的上涨更多地是由于人们对全球市场走向不确定，以及缺少提炼最容易获得的那种质量的石油的能力。