Essay

Iran Is Rewriting the Petrodollar in Real Time. Here Is What Is Actually Happening.

The Strait of Hormuz has been effectively closed since February 2026. Daily oil flow has fallen from 20 million barrels to fewer than 2 million. Iran is not simply disrupting the oil trade. It is redirecting it. This is what the end of the petrodollar looks like in practice.

The previous essay in this series documented why the US invaded Venezuela in January 2026: the world’s largest proven oil reserve was in the process of moving permanently outside the dollar system, and the operation was the response. What happened next was Iran.

Most coverage presents Venezuela and Iran as separate stories connected only by the same administration. They are not separate. They are sequential moves in the same defense of the same system. Understanding what Iran has done to the Strait of Hormuz requires understanding what the Strait actually is and what closing it means for the financial architecture documented throughout this series.

What the Strait of Hormuz actually is

The Strait of Hormuz is a waterway 29 nautical miles wide at its narrowest point, separating Iran from the Arabian Peninsula. In 2025, an average of 20 million barrels of oil and oil products passed through it every day. That figure represents approximately 20% of total global petroleum consumption and 25% of all seaborne oil trade. The primary exporters through the strait are Saudi Arabia, Iraq, the UAE, Kuwait, Qatar, and Bahrain. The primary importers are China, India, Japan, and South Korea, which together received 69% of all oil flowing through Hormuz in 2024.

Iran does not need to defeat the United States militarily to destroy the petrodollar system. It only needs to close a 29-nautical-mile waterway it sits beside. The moment that waterway closes, the oil that backs the dollar stops moving. The countries that need dollars to buy that oil no longer need dollars. The demand for US Treasury securities that the petrodollar system generates disappears. The $39 trillion national debt becomes dramatically more expensive to service. The entire financial architecture built since 1694, refined in 1913, and completed in 1974, begins to unravel in weeks, not years.

Since February 2026 the Strait has been effectively closed. Daily oil flow has fallen from 20 million barrels to fewer than 2 million. The International Energy Agency classified the disruption as the largest in history. Iran has gone further than simply closing the waterway: it has announced that vessels wishing to transit must settle payments in currencies other than the dollar. Ships operating outside the dollar system have been permitted through. The effect is a controlled bifurcation of the global oil trade. The infrastructure for conducting oil transactions entirely outside the dollar already exists. Iran is not threatening to use it. Iran is using it. The petrodollar is not dying in the abstract. It is dying in a specific waterway, barrel by barrel, transaction by transaction, in real time.

This is why Iran has always been on the list. The pattern is documented: every government that moved its oil outside the dollar system faced maximum pressure or military action. Iraq in 2003. Libya in 2011. Iran has faced unrelenting pressure since 2018. The official justifications change. The oil pricing does not. Iran’s particular threat is dual: it controls reserves priced outside the dollar and it physically commands the chokepoint through which the dollar’s remaining collateral flows. Removing that capacity was not a nuclear nonproliferation operation. It was infrastructure protection. That infrastructure is now gone anyway.

What the numbers show

The dollar’s share of global foreign exchange reserves has declined from 71% in 1999 to 56% in 2024. China has cut its holdings of US Treasury securities from $1.3 trillion in 2013 to $682 billion by November 2025, a reduction of nearly half. More than half of the world’s GDP is now generated through Asia, primarily China and India, increasing structural pressure to denominate trade in currencies other than the dollar. BRICS nations, which now number more than eleven countries, have built operational alternative payment infrastructure including China’s CIPS cross-border payment system, the mBridge project for multi-central bank digital currency settlements, and gold-backed reserve instruments. The direction of travel is not ambiguous. The dollar’s structural dominance is eroding and the pace is accelerating.

Two different responses to the same reality

While the US has spent the past decade conducting military operations to defend the dollar’s oil backing, the countries building outside that system have spent the same period building infrastructure. The Belt and Road Initiative has invested over $1 trillion across 140 countries. Alternative cross-border payment systems are now operational. Gold purchases by central banks have reached record levels for three consecutive years. Yuan financing by foreign borrowers is growing because it is cheaper: Chinese interest rates stand at 1.82% against 4.46% for US Treasuries. The world is not being forced away from the dollar by ideology. It is being offered better terms by competitors who decided to build rather than defend.

The US response has been tariffs, military operations, and the construction of domestic financial control infrastructure. None of it addresses the structural cause. It demonstrates to every watching government exactly what the cost of remaining inside the dollar system looks like when Washington decides you are a threat to it.

What comes next

The alternative energy technologies that would make oil’s role as the dollar’s backing obsolete exist. Solar, wind, green hydrogen, and advanced battery systems are now cheaper than fossil fuels in most markets. Their adoption has been structurally resisted in the United States for the same reason Venezuela was invaded: an energy transition away from oil removes the last remaining physical collateral of dollar dominance. The suppression of that transition is not an environmental policy failure. It is a financial system defense strategy.

The transition is happening anyway, because the economics are now too compelling to resist outside the United States. The world is building around the dollar system because the dollar system is increasingly a source of instability rather than stability. The Strait of Hormuz is closed. Venezuela’s oil is under US control. The national debt is $39 trillion and growing at $8 billion per day. The interest payments alone exceed the defense budget. The system is not being defended because it is strong. It is being defended because the people who built it cannot imagine, or will not accept, a world in which they do not control it.

The next essay in this series examines the domestic control architecture being built alongside this external defense: central bank digital currencies, AI surveillance infrastructure, and the question of who gets to operate inside a programmable financial system and who gets switched off.