Petrodollar
The petrodollar system is the arrangement, established in 1974–1975, by which global oil sales are denominated in US dollars. When the US abandoned the gold standard in 1971, the dollar needed a new anchor of value. The solution: America negotiated with Saudi Arabia to price oil exclusively in dollars, ensuring that every country needing oil, which means every country, must hold and use dollars.
The gold standard era (1944–1971) was established at the Bretton Woods Conference, where the world agreed the US dollar would be the global reserve currency, backed by gold at a fixed rate of $35 per ounce. This gave America enormous financial privileges but also imposed discipline: you couldn't print unlimited dollars if each one had to be redeemable in gold. President Nixon ended Bretton Woods in August 1971, declaring that dollars would no longer be convertible to gold, a decision driven by the costs of the Vietnam War and the Great Society programs.
The petrodollar system replaced the gold anchor with an oil anchor. In 1974, Treasury Secretary William Simon brokered a deal with Saudi Arabia: the US would guarantee Saudi security and provide arms in exchange for pricing all oil in US dollars and recycling oil revenues ('petrodollars') into US Treasury bonds. The deal was soon extended to OPEC. Suddenly, every country on earth needed dollars to buy energy, ensuring permanent demand for the currency regardless of America's economic performance.
This is why the invasion of Iran is, at its core, about defending the dollar. Iran has been trading oil in non-dollar currencies and encouraging others to do the same. If OPEC countries follow and price oil in euros, yuan, or a BRICS currency, the dollar loses its mandatory global demand. Without that demand propping up the currency, America's $34 trillion debt, held globally in dollars, becomes a crisis. The empire that replaced gold with oil must now fight to control oil.
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Frequently asked questions
What is the petrodollar? ＋
The petrodollar is the arrangement, formalized in the mid-1970s, where global oil is sold exclusively in US dollars. After Nixon ended the gold standard in 1971, the dollar needed a new anchor. America negotiated with Saudi Arabia to price oil in dollars, ensuring every country needing energy must hold and use dollars, effectively making the dollar the permanent global reserve currency.
Why is the petrodollar so important to American power? ＋
Because it creates artificial, mandatory demand for US dollars worldwide. Any country needing oil must first acquire dollars to buy it. This lets America run massive deficits, currently $34 trillion in debt, without triggering the inflation or currency collapse that would destroy any other nation. Losing the petrodollar would be an existential economic crisis for the US.