The Strait of Hormuz and the Oil Shock

Update, 2 November 2026. This briefing covers the June 2025 war, and its account of that war stands. Its wider argument, that closing the strait was a weapon too costly to use, has since been overtaken: in the separate war that began on 28 February 2026, attacks on shipping closed the Strait of Hormuz to normal traffic, and from 28 February to 20 September 2026 the vessel capacity crossing it averaged about 7 per cent of its 2025 level - IMF PortWatch. By late September oil was flowing again, about 12 million barrels a day against 17 million before the war, mostly on tankers sailing with their transponders off under US air cover - BBC Verify, citing Kpler, which is why a count of transponder signals still shows the strait nearly empty, and by late October shipments were back to about 80 per cent of pre-war levels - Bloomberg via gCaptain. That war has its own record.

The most powerful weapon in the Twelve-Day War was one that Iran held, threatened to use, and never fired. It was not a missile or a warhead. It was a 21-mile-wide gap of water between Iran and Oman, the Strait of Hormuz, through which roughly a fifth of the world's oil is shipped every day. For two weeks in June 2025, every energy analyst, every finance desk, and every foreign ministry ran the same nightmare: that a cornered Iran, its nuclear sites bombed and its commanders killed, would close the strait, choke the global economy, and send oil past 120 or even 150 dollars a barrel. Iran's own parliament voted to do exactly that. And then the strait stayed open, the oil price peaked near 80 dollars, and within days of the ceasefire crude was trading below where it had started the war.

This briefing is about the war's economic front, the one that was fought entirely in expectations, and it is worth studying precisely because the disaster everyone priced never arrived. On a record like Blackwing, the events that did not happen are as much a part of the truth as the ones that did, and the gap between the forecast and the outcome is where the real analysis lives. The oil market spent twelve days pricing a catastrophe. The catastrophe did not come. Understanding why it did not, why a chokepoint is a weaker weapon than it looks when the country holding it depends on the chokepoint too, is the key to reading not just this war's economics but the strange, self-limiting logic of the whole conflict.

The short version is a study in anticlimax, and the anticlimax is the point. Brent crude opened the war at about 70.84 dollars on 12 June, the eve of Israel's strikes. It climbed as the bombs fell, peaking at roughly 80.37 dollars on 19 June, a rise of about 13 percent - FRED, US EIA daily spot prices. Then the United States bombed Iran's nuclear sites on 22 June, the single most escalatory act of the war, the exact trigger the doomsayers had warned about, and oil fell. By the time the ceasefire took hold on 24 June, Brent was back down to about 69.13 dollars, below its pre-war level. The most dangerous fortnight in the region in a generation ended with oil cheaper than when it began. That is not what a supply shock looks like. It is what a market looks like when it decides, correctly, that the worst case is a bluff.

1. The chokepoint, and why everyone watched it

To understand the fear, you have to understand the geography, because the Strait of Hormuz is one of a small handful of places on Earth where a single narrow passage carries a load the whole world depends on. At its narrowest the strait is only about 21 miles wide, with shipping lanes narrower still, and through it passes roughly 20 percent of global oil consumption, the crude and condensate exported by Saudi Arabia, Iraq, Kuwait, the United Arab Emirates, Qatar, and Iran itself - CSIS, The Strait of Hormuz in 8 Charts. There is no meaningful way around it for most of that oil. A tanker leaving Ras Tanura or Basra has one route to the open ocean, and it runs within a few miles of the Iranian coast for the entire transit. That is the whole reason Hormuz is a strategic obsession: it is the rare economic artery that a single medium-sized power can, in theory, clamp shut.

The obvious question, whether the oil could simply go another way, has a discouraging answer, and it is the reason the chokepoint is a chokepoint. There are exactly two pipelines that bypass Hormuz, and together they can carry only a fraction of what the strait moves. Saudi Arabia's East-West pipeline can shunt around 5 million barrels a day to a Red Sea terminal; the United Arab Emirates' Fujairah pipeline adds perhaps 1.5 million more to a port on the Gulf of Oman. Set that against the roughly 20 million barrels a day that transit Hormuz, and the arithmetic is brutal: even running both bypasses flat out, the large majority of the oil has no alternative route and simply cannot reach the ocean if the strait shuts - CSIS, The Strait of Hormuz in 8 Charts. That 6.5 million barrels of relief is itself a contested figure, and this record's rule is to publish the competing number rather than pick a favourite: a later survey of the same passage on Portolan, a world-trade atlas we also built, reads the overland routes lower still, at a bypass capacity of 3.5 to 5.5 million barrels a day, which widens the shortfall above rather than narrowing it. The bypass capacity is a relief valve, not an escape hatch, which is exactly why a credible Hormuz closure would register as a genuine global supply shock rather than a reroute.

It is not only oil, either, and the gas dimension is the part most forecasts forget. Qatar, one of the world's largest exporters of liquefied natural gas, ships nearly all of it out through Hormuz, because Qatar's only maritime exit runs through the same strait. A closure would therefore hit not only the oil market but the global LNG market, tightening gas supply to Europe and Asia at the same moment it choked crude. The strait is not one chokepoint but two stacked on top of each other, oil and gas, which is why its closure is modeled as an economic event on the scale of a recession trigger and why, for two weeks in June, the world's energy desks did not sleep.

The theory is why the strait has been a recurring flashpoint for decades, studied and war-gamed to exhaustion - Congress.gov, CRS Report R45281. Iran does not need a navy to match the United States to threaten Hormuz. It needs mines, fast attack boats, shore-based anti-ship missiles, and drones, all of which it has in quantity, and all of which are far cheaper than the supertankers and warships they would target. The asymmetry is the point: a few million dollars of Iranian munitions could, on paper, put at risk tens of billions of dollars of daily oil trade and the insurance underwriting it. This is why, when a war actually came, the market did not need to be told to worry about Hormuz. It had been pricing that tail risk, quietly, for forty years.

That decades-long vigil is not paranoia; it is learned behavior. Hormuz has been the object of repeated crises, the Tanker War of the 1980s, periodic Iranian threats during sanctions standoffs, seizures of individual vessels, and each episode taught the market the same two-sided lesson: the strait is genuinely vulnerable and has never actually shut. That combination is what produces the characteristic Hormuz price pattern, a sharp, shallow spike: oil jumps on the threat because the vulnerability is real, then fades as the market remembers that the threat has never once been carried through. June 2025 drew that pattern almost perfectly, which is itself a kind of evidence. When a market responds to a novel crisis with a textbook-familiar move, it is telling you that it has seen this shape before and thinks it knows the ending.

So when Israel opened the war on 13 June and the United States joined it on 22 June, the strait was the first thing the energy world looked at, and for a few days it looked like the nightmare might be arriving. The signals in the water, which we will come to, turned genuinely chaotic. Iran's rhetoric escalated. And then, on 22 June, hours after American bombers struck Fordow, Natanz, and Isfahan, the escalation reached its formal peak: Iran's parliament voted to close the strait. For a moment, the tail risk the market had priced for four decades looked like it was about to become the base case.

2. The vote to close, and the decision never taken

The parliamentary vote is the hinge of the whole economic story, and it is worth being precise about what it was and, more importantly, what it was not. After the US strikes, members of Iran's parliament backed closing the Strait of Hormuz, and a senior figure on the National Security Commission, Major General Esmaeil Kowsari, declared that "parliament has concluded that the Strait of Hormuz must be closed." On its face, that is the doomsday headline. Oil traders around the world read it and braced. But the same official said the sentence that defused it in the same breath: the final decision, he noted, rested not with parliament but with Iran's Supreme National Security Council - International Crisis Group, Strait of Hormuz.

That distinction is not a technicality; it is the entire outcome. A parliamentary vote to close Hormuz is a signal, a piece of coercive theater aimed at the oil market and at Iran's enemies, deliberately loud and deliberately non-binding. The body that could actually order the strait mined or blockaded, the Supreme National Security Council, chaired in effect by the leadership, never gave that order. And so, for all the noise, the strait was never physically closed before the ceasefire. Tanker traffic thinned, as we will see, but it never stopped - International Crisis Group. The most consequential decision of the war's economic front was a decision not to act, taken quietly by the one body with the authority to act, while a louder body voted for the cameras.

Reading a coercive signal correctly means asking who it is aimed at, and the Hormuz vote was aimed at three audiences at once, none of them the strait itself. It was aimed at the oil market, to inject exactly the risk premium that would raise the economic cost of the war to Iran's enemies without Iran lifting a finger. It was aimed at a domestic audience, to show a population under bombardment that its leadership was not powerless and would answer the humiliation of the nuclear strikes with a threat of its own. And it was aimed at Washington and Jerusalem, a reminder that escalation carried a price they too would pay. A parliamentary vote is nearly ideal for all three purposes precisely because it is loud, official, and non-binding: it manufactures the headline and the risk premium while committing the state to nothing. Recognizing that the vote was an instrument of signaling rather than a step toward action is the difference between reading the war and being played by it, and it is the kind of distinction a record has to make in cold blood while the headlines are still screaming closure.

This is a pattern worth naming, because it recurs throughout the conflict and it is exactly the kind of thing a fact-based record exists to catch. The claim "Iran closed the Strait of Hormuz" spread widely, and it is false. Iran threatened to, its parliament backed it, and it was never done. The intelligence layer at Blackwing treats this as a first-class object: the contradiction engine lines up the claim against the independent signals that bear on it, the maritime tracking, the market tape, the absence of any actual closure order, and returns the verdict the crossed data supports, which is that the closure was contradicted, not confirmed. The difference between "voted to close" and "closed" is the difference between a threat and an act, and in a war fought partly in expectations, keeping those two straight is most of the job.

3. The signals in the water

The strait stayed open, but that does not mean nothing happened in it. Between the loud vote and the quiet non-decision, the waters of Hormuz became one of the most electronically chaotic places on the planet, and the alternative-data signals recorded it in detail even though the wire copy mostly did not. This is the part of the story that a conventional timeline misses and that the platform's seven-signal reading of the war was built to surface: the war left its clearest maritime fingerprint not in what ships did, but in what their instruments were made to say.

The dominant signal was GPS interference on an industrial scale. Jamming and spoofing around the strait surged to affect roughly 1,000 vessels a day at the peak, according to the maritime-intelligence firm Windward - Windward. Jamming denies a ship its position; spoofing is worse, it feeds the ship a false position. During the war, spoofing put impossible tracks on screens across the Gulf: supertankers shown sailing over dry land, vessels teleporting miles from their true location, navigation systems confidently wrong. In a 21-mile-wide strait crowded with laden tankers, a fleet that cannot trust its own positioning is a slow-motion accident waiting to happen, and on 17 June the accident came: the crude supertanker Front Eagle collided with the tanker Adalynn near the strait, an incident that maritime analysts linked to exactly this kind of position-spoofing - Windward. The war did not have to sink a tanker to disrupt shipping. It only had to make the tankers unsure where they were.

The behavioral signal followed the electronic one. As the jamming intensified and the rhetoric peaked, ship owners did the rational thing: they slowed down and waited outside. Daily transits through the strait fell from 147 vessels on 9 June to 111 on 15 June, a drop of roughly a quarter - Windward; CNBC. That number is the crux of the whole maritime story, so it is worth holding it precisely: a 20 to 25 percent reduction is not a closure. Three quarters of normal traffic kept moving through an active war zone, under electronic attack, past the coastline of a state whose parliament had just voted to shut the passage. The strait did not close. It got thinner and more dangerous, and the market could see, in the transit data, that oil was still flowing.

The thinning of traffic came with a cost that never appears in the transit count but is the real economic transmission belt of a Hormuz scare: war-risk insurance. Every tanker crossing a declared risk zone pays an additional premium on top of its hull value, and when war breaks out that premium can jump many-fold in days. During the war the cost of insuring a Hormuz transit spiked sharply, adding real dollars to every barrel that moved and pricing some marginal cargoes out entirely. This is how a threat that is never executed still bites: a strait does not have to close to become expensive. The fear of closure raises the insurance, the insurance raises the delivered cost, and the delivered cost feeds the very oil price the threat was meant to move. The Hormuz weapon, in other words, does economic damage through the insurance market long before, and even without, a single mine being laid.

The disruption did not stop at the waterline. The war also closed the skies, and the aviation signal recorded it: as the fighting escalated, Iran, Iraq, Jordan, and neighboring states shut swaths of Gulf airspace, and civilian traffic that normally threads the region was rerouted or grounded, with overflights of Saudi Arabia surging as carriers detoured around the war zone. The Gulf is one of the world's busiest air corridors, the connective tissue between Europe and Asia, and closing it levied its own quiet tax in fuel, time, and cancelled flights. The economic front of this war was never only about a barrel of oil. It was about the cost of moving anything through a region that had turned dangerous by sea and by air at once.

4. Why the market called the bluff

Here is the question that matters, and the one a first-principles analysis has to answer rather than dodge: if closing Hormuz was Iran's most powerful weapon, why did it never use it, and how did the market seem to know it wouldn't? The answer is not that Iran was bluffing in the sense of lacking the means. It had the mines and the missiles. The answer is that closing Hormuz would have been an act of economic self-destruction, and everyone, including the oil market, could see the arithmetic.

Start with the most direct cost. Iran's own oil goes through Hormuz. Iran is an oil exporter, and its crude, the revenue that keeps its state solvent under sanctions, sails the same 21 miles as everyone else's. To close the strait, Iran would have to stop its own exports first, cutting off its single largest source of hard currency at the exact moment a war had made that currency most precious. A weapon that you must point at your own economy before you can point it at your enemy's is not a weapon of first resort; it is a weapon of last resort, a suicide vest, and both Iran and the market understood that Iran was not yet suicidal.

Then there is the customer. The overwhelming share of the oil that transits Hormuz flows east, to Asia, and above all to China, which is Iran's most important economic partner and the largest buyer of its sanctioned crude. Closing the strait would not primarily hurt the United States, which is a net energy exporter and takes little Gulf oil; it would hurt China, India, Japan, and South Korea, the very states whose goodwill Iran most needs. Iran shutting Hormuz would be Iran strangling its own patron to spite an adversary that barely feels the blow. The geography of the oil trade turns the chokepoint from a weapon against the West into a weapon against Iran's own friends, which is precisely why it stays holstered.

It is worth dwelling on how thoroughly the geography inverts the intended target, because it is the least intuitive part of the whole picture. The mental model most people carry, "Iran closes Hormuz to hurt America," is almost exactly backward. The United States is a net energy exporter that draws little of its crude from the Gulf; a closure would raise the global price it pays at the margin, but it would not threaten American supply. The countries that would suffer an actual supply emergency are in Asia: China, which buys the largest share of Gulf and Iranian crude, along with India, Japan, and South Korea, economies that import the overwhelming majority of their oil and have nowhere else to get it at scale. So the true casualty list of a closed strait reads as Iran's own customers and its most important strategic partner, not its enemies. For Iran to close Hormuz would be to impose an oil shock on Beijing in order to punish Washington, a trade so lopsided against its own interest that no serious analyst, and no oil trader, ever believed it was the base case. The threat was aimed west in the rhetoric and east in its actual effect, and the gap between those two directions is much of the reason it was never fired.

Finally there is the response. A closed strait is not a permanent condition; it is an invitation to the US Fifth Fleet, headquartered a few hundred miles away in Bahrain, to reopen it by force, which is a mission the US Navy has planned for decades and would relish as a clean, legally straightforward, internationally supported operation. Closing Hormuz would hand Washington the one thing a cornered Iran least wanted: a broad coalition and a clear casus belli for a wider naval war Iran could not win. Add the three costs together, self-strangulation of exports, alienation of China, and a US-led reopening, and the "weapon" reveals itself as a threat that is far more valuable un-used than used. Its entire power lies in the fear of it. Fire it, and it destroys mostly its owner. The market did the same arithmetic in real time and priced accordingly.

History supplies the proof, because Hormuz has been tested before, and even at its bloodiest it did not close. During the Tanker War of the 1980s, the maritime phase of the Iran-Iraq conflict, hundreds of merchant ships were attacked in and around the Gulf over several years by mines, missiles, and aircraft from both sides. It was a genuine shooting war against commercial shipping, far more sustained than anything in June 2025, and yet the strait stayed open the entire time. When the threat to shipping grew serious enough, the United States responded with Operation Earnest Will, reflagging Kuwaiti tankers under American colors and escorting them through the strait, and the oil kept flowing. The historical lesson is unambiguous: Hormuz has survived a multi-year war fought inside it, because the incentives that keep it open, everyone's dependence on the oil including the attacker's, and the overwhelming naval power arrayed to reopen it, are structural and durable, not contingent on any single crisis.

That precedent is why the market's calm was memory, not complacency. A trader pricing Hormuz risk in June 2025 was not only doing the arithmetic of Iran's self-interest; they were recalling that the strait had shrugged off a far longer and bloodier assault and stayed navigable. The one scenario genuinely capable of closing the strait for a meaningful stretch is a large naval mining campaign, and it requires Iran to lay a dense field under a sky owned by American and Israeli aircraft and then defend it against a mine-clearing operation the US Navy has rehearsed for four decades. It is not impossible. But it is hard, slow, and self-destructive, and it has never once been carried to completion, which is the single most important fact the oil market held in its head as it declined to panic.

5. The tape that priced peace before the diplomats did

If the maritime data shows that the strait stayed open, the market tape shows something subtler and more remarkable: that traders priced the ceasefire before it was announced. This is the kind of thing the platform's markets signal exists to surface, because a price is a piece of aggregated intelligence, a real-time vote by thousands of people with money at stake on what they think will happen next, and in June 2025 that vote turned dovish at a very specific and very telling moment.

The clearest tell came on 23 June, the day after the US strikes and the day before the formal ceasefire. That was the day oil fell hardest: WTI dropped about 7.2 percent, its biggest single-day decline since April - as the platform's own contradiction engine records, cross-referencing the market move against the maritime and diplomatic signals. Stop and consider the timing. The United States had just carried out the most escalatory strike of the entire war, bombing three Iranian nuclear sites. Iran's parliament had just voted to close Hormuz. Every headline pointed toward widening war. And the oil market sold off, hard. Traders were not reading the headlines; they were reading the absence of a closure order, the still-flowing tankers, and the tea leaves of back-channel diplomacy, and they concluded, a full day ahead of the official announcement, that the war was ending, not spreading.

That is the deep lesson of the economic front, and it generalizes. Markets are a forecasting instrument, not a scoreboard. They do not tell you what happened; they tell you what a large, motivated crowd expects to happen, discounted to the present. When that instrument diverged sharply from the headlines, selling into the scariest news of the war, it was not being irrational. It was pricing the private information that the escalation was theater and the endgame was near, and it was right. A record that reads the market tape as intelligence, rather than as a mood ring, gets an early, independent read on where a war is actually going, which is exactly why the oil price is one of the seven signals the platform tracks against the news.

It helps to be precise about what was actually in the price, because "the oil market priced the ceasefire" is a claim that can be made rigorous. The wartime oil price contained a geopolitical risk premium: an extra few dollars a barrel that did not reflect any actual disruption to supply, since the oil was still flowing, but rather the market's estimate of the probability and severity of a future disruption, multiplied together and discounted to today. When that premium is, say, ten dollars, it does not mean traders expect a ten-dollar loss; it means they are weighting a small chance of a catastrophic loss against a large chance of no loss at all. The decay of that premium is therefore a direct readout of the market's changing estimate of catastrophe. When oil sold off about 7 percent on 23 June, into the scariest headlines of the war, the market was not declaring the danger over; it was repricing the probability of the tail event downward, sharply, because the signals it watched, open transits, no closure order, diplomatic movement, had shifted the odds. The risk premium is the purest thing the oil tape measures, and watching it deflate a day before the ceasefire is watching collective expectation update in real time. Separating a risk premium from supply and demand like this is economists' work, and AI labs now pay economists by the hour to grade how their models reason about questions like it: the economist roles on AITraining.jobs, a job tracker the makers of Blackwing also run, list that work with its pay.

6. The war of expectations, and who won it

Step back from the specifics and the economic front of the Twelve-Day War resolves into a single clean shape: it was a war of expectations, fought between the forecast and the outcome, and the outcome won. The forecast was apocalyptic and nearly unanimous: a cornered Iran closes Hormuz, oil rockets past 120 dollars, a global energy shock tips fragile economies into recession. The outcome was an 11 to 13 percent oil spike that fully reversed within two weeks, a strait that stayed open, and a market that had called the whole thing before the ceasefire was signed. The distance between those two is the most important economic fact of the war, and it is a distance made entirely of fear that did not cash out.

This matters beyond oil, because it reveals the self-limiting logic that governed the entire conflict. The same structure that kept Hormuz open, that Iran's most devastating options were also its most self-destructive, ran through the whole war. Iran's retaliation for the US strikes on its nuclear sites was a telegraphed, casualty-free salvo at the Al Udeid air base in Qatar, calibrated to satisfy honor without triggering the wider war Iran could not survive. The nuclear strikes themselves hit sites Iran said were evacuated in advance. At nearly every rung of the escalation ladder, the actors reached for the option that let them claim action while avoiding the catastrophe, and the oil market, watching all of it, bet steadily that this pattern would hold. It did. The economic front was won not by whoever had the biggest weapon, but by the shared, unspoken understanding that the biggest weapons were the ones no one could afford to use.

There is a temptation, seeing this, to conclude that the Hormuz threat was empty and the oil fear was foolish, and that temptation should be resisted, because it mistakes an outcome for a certainty. The threat was not empty; it was conditional. Iran chose not to close the strait in June 2025 because the arithmetic of that moment made closure suicidal. Change the arithmetic, a regime that decides it is going down anyway, a leadership that concludes it has nothing left to lose, and the same weapon becomes usable, which is exactly why the market never priced the risk at zero even as it bet against the disaster. The correct reading is not "Hormuz is a bluff" but "Hormuz is a threat whose credibility depends on Iran's desperation," and in June 2025 Iran was cornered but not yet desperate. The oil price, hovering at a nervous but un-catastrophic 80 dollars at its peak, was the market pricing precisely that: a real risk that probably would not fire, held by an actor that probably would not choose annihilation. It was, in the end, a remarkably accurate forecast.

There is a general principle buried in all this, and it is worth stating because it outlasts this particular war: the deterrent value of a chokepoint is inversely related to the holder's willingness to use it. A weapon that would devastate its own owner is a superb deterrent precisely because everyone believes it will not be fired, which is what lets it sit there, un-used, exerting pressure. But the same feature that makes it a good deterrent, its self-destructiveness, makes it a poor actual weapon, because the moment the holder is desperate enough to use it is the moment the deterrent has already failed. Iran's Hormuz threat in June 2025 worked exactly as a deterrent is supposed to: it added a risk premium to oil, it made the world take Iran's position seriously, and it cost Iran nothing because it was never executed. Had Iran fired it, the threat would have converted, instantly, from a source of leverage into a source of ruin. This is the chokepoint paradox, and it is why the most dangerous straits on Earth are, most of the time, the safest: their guardians cannot afford to close them, and everyone knows it.

7. What the record shows

Pull the economic threads together and the picture is one the platform can state with confidence, because it rests on crossed signals rather than any single claim. The oil price rose modestly and reversed completely: Brent from 70.84 dollars pre-war to a 80.37 peak to 69.13 after the ceasefire - FRED. The Strait of Hormuz was threatened, its closure voted for by parliament, and it never closed, with transits down about a quarter but three-quarters of traffic still moving - International Crisis Group. The waters were saturated with GPS jamming and spoofing that peaked near 1,000 vessels a day and helped cause the Front Eagle collision - Windward. And the market priced the ceasefire a day early, selling oil hardest on the day of the most escalatory strike. Each of these is sourced, and together they corroborate a single narrative that no press release asserts and no headline captured: the war's economic weapon was real, was brandished, and was never used, because using it would have hurt its owner most.

That narrative is exactly the kind of thing the intelligence layer is built to hold, and it connects to the rest of the record in a way worth making explicit. The markets and maritime signals are two of the seven independent data streams the platform reads against the news; here they converge on one conclusion. The casualty record shows the same self-limiting logic in the human toll, an asymmetric but bounded war. The Fordow assessment shows it in the nuclear question, a strike whose damage was real but contested. In every dimension, this was a war that reached for the escalatory gesture and then flinched from the catastrophe, and the oil market, that cold aggregator of expectations, saw the flinch coming and bet on it. You can trace the events themselves, the parliament vote, the Al Udeid strike, the Front Eagle collision, on the live map and the full timeline, each tied to its source.

The forward-looking value of getting this right is considerable, because Hormuz will be threatened again, and the next time the same reflexive panic will grip the same desks. A record that documented, carefully, how the June 2025 threat actually resolved, the vote without the act, the transits without the closure, the spike without the shock, is a calibration instrument for the next crisis. It does not claim Hormuz can never close; it establishes that the bar for closure is a desperate Iran willing to strangle its own economy and its patron, and it names the concrete signals to watch, the transit counts, the insurance premiums, the presence or absence of a Security Council order, that separate a real closure from a loud threat. The point of holding an honest record of a war that did not unfold the way it was forecast is not nostalgia. It is to be less wrong the next time, and to hand the reader the same discipline: watch the water and the tape, not the headline.

The final image of the economic front is the one the price chart draws: a spike that became a dip, a fortnight of dread that ended with oil cheaper than it started. The Strait of Hormuz, the most feared chokepoint on Earth, spent the Twelve-Day War doing the one thing no one quite believed it would do while the headlines screamed otherwise. It stayed open. And the market, reading the signals in the water and the silence from the Supreme National Security Council, understood before almost anyone else that it would.

This briefing reflects the economic record of the June 2025 Twelve-Day War (13 to 24 June 2025) as documented through late 2025, and does not concern any later conflict, price move, or Hormuz crisis. Oil figures are daily spot prices via FRED; maritime figures are sourced to Windward and contemporaneous reporting. Where a claim (the strait's closure) circulated widely and the data contradicts it, the record says so.