TEHRAN, July 14 — The narrow waterway that carries about 20% of the world’s daily oil supply is once again at the center of global economic anxiety. The Strait of Hormuz, a waterway between Iran and Oman, connects the Persian Gulf to the Gulf of Oman and the Arabian Sea. Roughly 17 million barrels of oil passed through it every day in 2022, according to the U.S. Energy Information Administration.
That’s about 20% of the world’s oil. Think of it like a single highway on-ramp that every major oil producer in the region has to use.
Saudi Arabia, Iraq, Kuwait, the United Arab Emirates, and Qatar all send their exports through this one passage. When that on-ramp gets blocked, the whole system backs up.
A familiar threat with a new context
Iran has threatened to close the strait before. The country did so in response to sanctions and military pressure in 2011-2012 and again in 2018-2019. During the 2019 drone incident, oil prices spiked by 15% in a single day.
The current U.S. military action could disrupt shipping, leading to higher oil prices and global economic instability. The International Energy Agency has contingency plans in place.
Those plans involve releasing oil from strategic petroleum reserves held by member countries. The idea is to flood the market with stored oil if the flow through the strait gets cut off, buying time for diplomatic solutions or military escorts to restore normal shipping.
Who feels the pain first
The United States is now a net oil exporter, which changes the calculus compared to previous crises. America’s own vulnerability is significantly reduced because it produces more oil than it consumes. The practical upshot: American drivers might see some price increases at the pump, but the country won’t face the kind of supply crunch that could shut down industries.
The same is not true for major Asian economies. China, Japan, and India are heavily dependent on oil that moves through the Strait of Hormuz.
For those countries, a prolonged disruption isn’t just about higher prices — it’s about whether factories run, whether power plants generate electricity, and whether cargo ships can make their deliveries. Those three economies together represent a massive share of global manufacturing and trade.
What to watch next
The economic impact will depend entirely on the duration and scope of the conflict. A short disruption, measured in days, would cause price volatility but likely not a lasting shock. A longer closure, measured in weeks or months, would test the IEA’s reserve-release system in ways it hasn’t been tested before.
The real question is whether Iran follows through on its threats this time. The country has used the strait as leverage before, but actually closing it would be an act of war that could draw in navies from around the world.
For now, the markets are watching the same narrow stretch of water they’ve watched before, waiting to see whether history repeats itself or takes a new turn.
