For months, the global oil market has survived the Hormuz disruption by finding alternatives. Now the alternatives are being attacked. Saudi Arabia has shut its East–West pipeline after drone strikes, removing one of the most important routes designed specifically to bypass the Strait of Hormuz. The pipeline can carry roughly 7 million barrels a day from the Gulf coast to Yanbu on the Red Sea. Brent moved above $108. That reaction is understandable. The market is beginning to realise that the problem is no longer one chokepoint. It is the disappearance of redundancy. When Hormuz became dangerous, Saudi Arabia could move crude westwards through the pipeline and load tankers on the Red Sea. When the Red Sea became dangerous because of Houthi attacks, ships could sail around Africa. When individual terminals were threatened, inventories could temporarily absorb the disruption. Each solution bought time. The war is now attacking the solutions themselves. The East–West pipeline had become one of the central pieces of the Gulf’s emergency infrastructure. Saudi exports through Hormuz have already been severely constrained, contributing to a collapse in the kingdom’s crude exports towards levels not seen in decades. Without the pipeline, Riyadh becomes increasingly dependent on inventories at Yanbu. Those stocks may sustain exports for perhaps five to seven days.

After that, logistics become production. If crude cannot leave the country, Saudi Arabia may eventually have little choice but to pump less. That is the critical transition. Until now, the Middle East energy shock has largely been about disrupted exports rather than lost production capacity. A prolonged pipeline closure could change that. The barrel still exists underground. But if there is nowhere to send it, economically it begins to disappear from the market. The timing could hardly be worse. Iran and Gulf states were supposed to discuss a temporary shipping corridor through Hormuz. That meeting has now been postponed as regional tensions increase.

At the same time, Iran-backed Houthis are advancing along Yemen’s Red Sea coast towards areas close to Bab el-Mandeb. Hormuz is constrained in the east. Bab el-Mandeb is becoming more dangerous in the west. And the pipeline connecting the two sides of Saudi Arabia has been shut in between. The geography of the conflict is becoming the story. The Gulf possesses enormous oil reserves. What it increasingly lacks are safe exits. This also changes Iran’s calculus. Tehran does not need to close Hormuz completely. If allied groups can threaten alternative pipelines, Red Sea ports and Bab el-Mandeb while Iran maintains pressure inside Hormuz, the effective leverage becomes much larger than the Strait itself. It creates what amounts to a regional logistics blockade without requiring a formal blockade anywhere. That is strategically more sophisticated and potentially more durable. The consequences are already moving beyond crude. US diesel has passed $6 a gallon for the first time. Petrol is above $4. European refined-product prices remain exceptionally high. That matters because diesel transmits the energy shock into almost everything else in the economy.

And inventories are no longer providing the protection they did earlier in the conflict. Strategic reserves have already been drawn down, commercial stocks are tighter and Russian refinery disruptions are simultaneously restricting global refined-product supply. The margin for error is shrinking. This is why $120 oil is no longer an extreme scenario. It may simply be the price required to destroy enough demand if physical exports cannot recover. And unlike earlier oil shocks, central banks are entering this phase with inflation already above target. The Fed is considering higher rates. The ECB has already tightened. Bond yields are rising globally. Another energy shock therefore does not arrive in isolation. It reinforces the inflation shock, which reinforces the interest-rate shock, raising the cost of financing for governments and companies already borrowing heavily.

One damaged pipeline in Saudi Arabia can therefore influence mortgages in America and sovereign yields in Europe. That is how integrated the transmission mechanism has become. The Middle East still has plenty of oil. That is no longer the reassuring fact it once was. Oil has value only if it can move. For six months, the market has assumed that if one route failed, another would remain available. Hormuz had pipelines. Pipelines had the Red Sea. The Red Sea had alternative shipping routes. The war is progressively removing each layer of insurance. The danger is no longer that the world runs out of oil. It is that the Middle East runs out of ways to deliver it.