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With Iran announcing today that the Strait of Hormuz is fully open again for commercial shipping during this Lebanon ceasefire, it’s worth remembering why this 21-mile-wide sliver of water has been fought over for literally thousands of years.
It’s not just another patch of ocean. It’s the narrowest choke point on the planet for energy. About 21 million barrels of oil - roughly one-fifth of the world’s daily supply - slide through here every single day, plus a big chunk of liquefied natural gas. Shut it down, even for a week, and global prices go haywire. We saw the proof in the last month of tensions.
But the story didn’t start with oil tankers or modern geopolitics. It goes way back.
Think Bronze Age, around 3000 BCE. Sumerian merchants from Mesopotamia (modern Iraq) were already loading ships with grain, wool, and dates, sailing down what they called the “Lower Sea” to trade with the Indus Valley civilization in today’s Pakistan. The strait was the gateway. No empires yet - just practical sailors using the current and the wind.
Fast-forward to the Achaemenid Persian Empire. Cyrus the Great and Darius I (around 550–330 BCE) didn’t just use the strait - they owned the northern shore and treated the Persian Gulf as their imperial highway. They built ports, dug canals linking the Gulf to the interior, and made sure trade flowed: spices, silk, pearls, incense. Alexander the Great sent his admiral Nearchus through it in 325 BCE just to prove it connected India to his empire. The Sasanians (third to seventh century CE) kept the tradition alive, turning the Gulf into a Persian lake that fed their rivalry with Rome.
Then came the Islamic golden age. The Kingdom of Hormuz (or Ormus) rose on a tiny island in the strait around the 10th century. It became ridiculously wealthy - pearls, spices, textiles, indigo, dates. Medieval travelers called it the “Key to India.” For centuries it acted as a semi-independent trading republic, paying nominal tribute to whoever held the Persian mainland while taxing ships and caravans. It was the medieval Dubai, except with actual strategic teeth.
Enter the Europeans, hungry for direct access to Asian spices without the Ottoman middlemen.
In 1507, Portuguese explorer Afonso de Albuquerque showed up with cannons. By 1515 they’d seized Hormuz Island, built a fortress, and turned the strait into their personal toll booth. They ran what historians politely call a “protection racket” for 115 years - tax ships, escort (or attack) rivals, monopolize the India-Europe spice route. The Ottomans tried three times to kick them out and failed. Portugal basically said: pay up or get sunk. Classic 16th-century colonialism.
The Persians weren’t done, though. In 1622, Shah Abbas the Great of the Safavid Empire struck a deal with the English East India Company. The English wanted silk and a foothold; the Persians wanted their strait back. Together they besieged and expelled the Portuguese. Hormuz Island was retaken. Persian control returned to the northern coast - the same coast Iran still holds today.
From there it’s a slow handoff. The Safavids, then the Qajars, kept nominal sovereignty while the British gradually became the Gulf’s policeman in the 19th century. They signed treaties with the “Trucial States” (today’s UAE) to suppress piracy and protect their India route. European maps started calling the southern shore the “Pirate Coast.” Oil changed everything.
Black gold was discovered in Iran in 1908. The British poured in, built the Anglo-Persian Oil Company (later BP), and basically ran the show until Iran nationalized its oil in 1951. Britain responded with a blockade of the strait to squeeze Tehran - classic gunboat diplomacy. Fast-forward to 1979: the Islamic Revolution. The Shah is gone, the Islamic Republic is born, and Iran suddenly sees the strait as both a birthright and a defensive moat. The 1980s Iran-Iraq War turned it into the “Tanker War” - both sides mined the waters and attacked neutral ships. The U.S. got pulled in to protect tankers. History repeating, just with missiles instead of cannonballs.
Geographically, nothing’s changed: Iran owns the entire northern coast and several strategic islands (some disputed with the UAE). Oman holds the southern tip (Musandam peninsula). By international law the narrow shipping lanes are supposed to be open to “transit passage” for all peaceful ships. But geography gives Iran the upper hand - coastline, missiles, speedboats, drones, mines. Whoever controls the north can make life very expensive for everyone else.
Here’s the part that’s been quietly bugging people lately: tolls.
Look at other major sea routes. The Suez Canal? Egypt charges ships hundreds of thousands of dollars per transit because they dug and maintain the damn thing. Panama Canal? Same story - tolls based on tonnage and cargo. Strait of Malacca, Gibraltar - everyone who invests in security or infrastructure takes a cut. It’s normal.
The Strait of Hormuz is different. It’s a natural waterway, not a man-made canal. For centuries Iran never charged a formal toll. They policed it, they threatened it when sanctioned or attacked, but they didn’t set up a ticket booth. That changed in the recent flare-up. Amid the U.S.-Israeli strikes, Iran floated “safe passage” fees - reports of up to $2 million per supertanker or roughly a dollar per barrel - partly as leverage, partly as revenue after years of sanctions. International maritime law says no, natural straits should stay free. Iran says geography is destiny and they’ve paid the price in blood and sanctions to keep the lane open.
So why does Iran fight so hard for it? Simple. It’s leverage. Control the strait and you control 20-25% of global oil flow, including your own exports. In a world of sanctions, drones, and proxy wars, that narrow channel is Iran’s ultimate insurance policy. It’s also sovereignty: this has been Persian/Iranian coastline for 2,500 years. They see foreign navies patrolling it the way Americans would feel about someone blockading the Florida Straits.
Why do Israel and the U.S. lose sleep over it? Energy security, plain and simple. Gulf oil keeps the global economy humming. A serious disruption spikes prices everywhere - gas at the pump, inflation, stock markets. Saudi Arabia, UAE, Iraq - all U.S. partners - rely on it. Israel gets hit indirectly through higher costs and regional chaos. Plus, both countries view Iran’s missile-and-proxy strategy as an existential threat. Free navigation in international waters is a core U.S. doctrine (they’ve gone to war over less). Nobody wants one country able to flip the global energy switch on a whim.
Today, with the strait open again, tankers will start moving and prices should ease. It’s a reminder that this place has survived empires, cannon fire, tanker wars, revolutions, and now whatever the 2020s throw at it. The water is the same. The stakes are higher. History doesn’t repeat, but it sure rhymes.
The next time you fill your tank or check the news, remember: a lot of the world’s economic heartbeat still passes through one of the oldest, most contested pieces of ocean on Earth.
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The White House@WhiteHouse
"IRAN HAS JUST ANNOUNCED THAT THE STRAIT OF IRAN IS FULLY OPEN AND READY FOR FULL PASSAGE. THANK YOU!" - President Donald J. Trump 🇺🇸
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