The Oil Exists, but Can It Reach the Market?
One of the most important distinctions in understanding the current crisis is the difference between petroleum reserves and petroleum availability. Saudi Arabia, Iran, Iraq, Kuwait and the United Arab Emirates have not suddenly lost their enormous geological reserves. The oil remains underground.
But underground oil does not determine tomorrow morning's gasoline price. Oil must be produced, transported through pipelines, loaded onto tankers, insured, shipped, unloaded, refined and distributed. Interrupt enough links in that chain and effective global supply falls even though the petroleum itself continues to exist.
The International Energy Agency describes the Middle East war as having produced the largest oil-supply disruption in the history of the global petroleum market. Its September Oil Market Report estimates that Gulf oil exports in August were approximately 13 million barrels per day, nearly half their prewar level. The IEA also reports that the most severe tightness is increasingly appearing in refined petroleum products rather than crude alone. [10]
The U.S. Energy Information Administration reaches a similar conclusion from another direction. Its September Short-Term Energy Outlook estimates that global oil inventories fell by an average of approximately 3.9 million barrels per day during the second quarter of 2026 and projects another substantial draw during the third and fourth quarters. The agency expects Middle Eastern export constraints to persist through the end of the year and warns that changing conditions in Hormuz and alternative export routes will continue producing significant price volatility. [11]
This helps explain why the attack on one Saudi pipeline can move markets disproportionately. Traders are not merely calculating how many barrels were physically lost during the attack. They are calculating the probability that future barrels will fail to reach buyers.
The War Has Arrived at the Gas Pump
For Americans, the consequences are becoming increasingly visible. EIA daily price data for September 10 showed Brent crude at $120.98 per barrel and West Texas Intermediate at $103.57. The same data showed the national average retail price of regular gasoline at approximately $4.30 per gallon and diesel at $6.06 per gallon. [12]
AAA reported that the national gasoline average rose approximately 13 cents in a single week, from about $4.14 to $4.27, even though this is normally a period when gasoline prices begin declining as summer driving demand fades. By September 12, AAA's national average had reached approximately $4.31 per gallon. [12]
Diesel may ultimately be even more economically important than gasoline. Trucks carry food, medicine, consumer products, construction materials and industrial goods. Farmers, heavy equipment and much of the freight economy depend upon diesel. When diesel reaches approximately $6 per gallon, the additional transportation cost does not remain at the truck stop. It gradually enters the price of the goods being transported.
The IEA reports that the global diesel and gasoil market is experiencing even more severe stress than crude. U.S. diesel prices in international market terms surged above $200 per barrel in early September, almost double their prewar level. Refinery margins have consequently reached extraordinary levels. [10]
The EIA also expects U.S. distillate inventories, including diesel and heating oil, to fall below 100 million barrels during September and remain below their recent five-year range through the end of 2026 and much of 2027. That means even a future easing of crude-oil prices would not necessarily translate immediately into inexpensive diesel. [11]
Saudi Arabia Faces the Yemen Question Again
The Houthi advance has placed Saudi Arabia in a particularly difficult position. Crown Prince Mohammed bin Salman asked President Trump for U.S. military assistance against the Houthis, according to Reuters. Washington has so far declined to launch another direct American military campaign against them. U.S. officials told ABC News that the administration is instead offering Saudi Arabia intelligence and targeting assistance. [1][13]
That distinction is important. The immediate military question is increasingly not whether the United States will expand its war by bombing Yemen, but what Saudi Arabia and its Yemeni allies will do about the expanding Houthi position.
Saudi-backed Yemeni government forces have already fought the Houthi advance, and Saudi Arabia has powerful reasons not to allow an Iran-aligned armed movement to consolidate control around Bab el-Mandeb. Yet Riyadh also knows from years of war in Yemen how difficult and expensive defeating the Houthis can be.
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