Oil Markets Shift From Iran War Sprint to Marathon as Saudi Pipeline and Red Sea Route Crumble

From Short-Lived Shock to Endurance Test: How the Conflict Expanded

Nearly seven months after the first disruption of Gulf oil exports, the market's core assumption has broken. What was treated as a temporary Iran-related supply shock is now a broad regional conflict that has reached Yemen and Saudi Arabia's critical energy infrastructure. Crude has climbed back above $100 a barrel, and the safety buffers that absorbed the initial damage—spare Saudi pipeline capacity, stored crude and functioning alternative export routes—are much thinner.

The latest escalation has two immediate flashpoints. Iran-aligned Houthi forces have advanced toward the Bab el-Mandeb Strait at the Red Sea's southern entrance and reiterated a naval blockade, with transit said to remain open except for Saudi-linked vessels. Separately, Saudi Arabia's East-West pipeline, the kingdom's main alternative to the Strait of Hormuz, was temporarily shut after drone attacks launched from Iraq. The 1,200-kilometre line had been carrying 4 million to 5 million barrels per day of west coast exports in the first five months of the war; Kpler data show those flows fell to only 2 million barrels per day in August.

The pressure is now visible in inventories and production. The IEA estimates global stocks have fallen by 507 million barrels since the conflict began, a drawdown of about 2.8 million barrels per day. Saudi output dropped to 6 million barrels per day in August, the lowest in more than three decades. Exports through Hormuz have recovered somewhat to around 5 million barrels per day—about a quarter of pre-war levels—but refined product exports from the region remain nearly 60 percent below pre-war levels, causing acute diesel shortages and record prices.

US President Donald Trump has shifted his timeline, saying the conflict may end only after the US midterm elections on November 3. That is a clear departure from the administration's initial suggestion that the war would last weeks. Markets cannot know whether the forecast is right, but the loss of physical shock absorbers means any new disruption will hit harder than the first one did.

Why Saudi Arabia's Buffer Routes and Product Markets Are the New Pressure Points

Saudi Arabia's East-West Pipeline Is Now the Narrowest Safety Valve

The drone attack on the East-West pipeline matters because that route was doing the work Hormuz could not. The kingdom more than doubled west coast exports through the line to 4–5 million barrels per day, roughly 4–5 percent of global oil supply. When those volumes fell to 2 million barrels per day in August, the global market lost one of its few remaining buffers. Satellite imagery suggests at least one pumping station was hit, so the repair timeline is now a market-moving variable. Saudi Arabia can draw on stored crude for several days, but that is a short-term patch, not a solution.

The Bab el-Mandeb Squeeze Compounds the Hormuz Problem

Yemen's Houthis are tightening control over the southern entrance to the Red Sea at the same moment tanker operators are already reluctant to enter the Gulf. Iranian strikes on more than a dozen tankers in the past week are a reminder that naval escorts reduce risk but do not remove it. Freight and insurance costs are at all-time highs, and many ships are switching off navigation systems during Hormuz transits. The combination of a constrained Hormuz and a contested Bab el-Mandeb means Saudi Red Sea exports face simultaneous threats from the north and south.

Refined Products Are Flashing a More Immediate Warning

Crude has absorbed much of the visible disruption, but refined products have fared worse. Regional exports of diesel, gasoline and jet fuel remain nearly 60 percent below pre-war levels, according to IEA estimates. That disconnect is why diesel prices are at records even when crude's headline moves look less dramatic. For the real economy, this is the more painful channel: factories, trucking and airlines feel product shortages before the broader crude balance tips.

The Off-Ramp Assumption Has Broken Down

The market's seven-month bet was that Washington would find an exit once gasoline prices became politically costly. That bet assumed Tehran would cooperate, and so far it has not. Iran's leadership views the conflict as existential, while the US blockade is inflicting severe economic damage on Iran. Those competing pressures could push both sides to negotiations, but they could equally encourage each to keep fighting for a stronger bargaining position. Trump's midterm timetable is only a forecast, and the physical market is no longer cushioned enough to absorb many more surprises.

What Energy Buyers, Shippers and Traders Should Watch Into 2027

The story's practical implications depend on where you sit in the energy chain. The data points to a market that is losing its margin for error, so planning horizons need to extend beyond the next Washington headline.

• Energy buyers should stress-test refined-product exposure now. IEA data show regional diesel, gasoline and jet fuel exports still nearly 60 percent below pre-war levels, so contracts tied to those products cannot be managed as if crude's recovery is the whole story.
• Tanker operators and charterers need a war-risk review for Gulf and Red Sea routes. Iranian strikes hit more than a dozen tankers last week, and freight and insurance costs are at all-time highs; Bab el-Mandeb and Hormuz transits now carry both physical and balance-sheet risk.
• Watch Saudi pipeline repair updates and Kpler shipment flows. The drop from 4–5 million barrels per day to 2 million barrels per day in August on the East-West line is a leading indicator of whether the IEA's 507-million-barrel global inventory draw accelerates.
• Do not treat November as a guaranteed off-ramp. Trump's midterm timeline is a forecast, not a signed agreement, and Iran has shown little interest in cooperating; supply planning should cover disruption extending into 2027 unless a verified deal changes the physical picture.