Basically true.After the U.S. reneged on paying off gold to France from the Bretton Woods agreement from WW 2, the world financial system started to buckle. A basket of currencies was set up with our nation not paying attention to oil producing nations. They saw an opening with a developing Watergate, and we still treated them stupidly. Eventually we made a deal where our currency aligned with the greatest sweet crude oil on earth at the time. And Saudi Arabia was ground zero. So, our currency and Saudi oil which is a commodity ruled for a half century. We lost control of our Fiat Currency at that time as we cry about massive debts that grow and grow now. There are different grades of oil. We may export our lower grades to other parts of the world to get the sweetest ones imported for us.