I second the Yergin recommendation but don't understand this: > Right now the US seems to be using oil exports to weaken other countries, rather than banking t

I second the Yergin recommendation but don't understand this: > Right now the US seems to be using oil exports to weaken other countries, rather than banking the oil and exploiting it when supply starts to dry up. I also think that some methods aren't long-term a good idea. The US is still a net importer. It exports some because its refineries are more setup for heavy grade imports. The light, sweet crude from its newer shale efforts command a premium price on the world market from those refineries that are less able to handle heavy crude, so are exported. See for example: https://www.cnbc.com/2018/04/17/shale-oil-has-a-refining-problem-and-morgan-stanley-smells-opportunity.html https://www.cnbc.com/2018/04/17/shale-oil-has-a-refining-pro... What reason do you have for saying oil exports are being used to weaken other countries?