US Shale Oil Threatens to Derail OPEC’s Future: IEA

http://breakingenergy.com/2013/08/09/us-shale-oil-threatens-to-derail-opecs-future-iea/?utm_source=Breaking+Energy&utm_campaign=d99652f0ea-RSS_EMAIL_CAMPAIGN&utm_medium=email&utm_term=0_f852427a4b-d99652f0ea-407304281