Oil futures slid more than $1 a barrel on Thursday, pressured by a double dose of bearish demand data and a massive, unexpected surge in U.S. crude inventories. Yet, the losses were sharply curtailed by a deepening security crisis in the Middle East, where deadlocked diplomatic talks and fresh attacks on shipping have kept the specter of major supply disruptions alive.
Brent crude futures fell $1.29, or 1.5%, to settle at $87.69 a barrel by 0100 GMT, while U.S. West Texas Intermediate (WTI) crude dropped $1.30, or 1.6%, to $81.97.
Demand Outlook Deteriorates
The selling pressure was ignited by two major forecasters revising their 2026 global oil consumption estimates downward in stark terms. On Wednesday, the Organization of the Petroleum Exporting Countries (OPEC) trimmed its world oil demand growth forecast for next year to just 580,000 barrels per day (bpd).
More alarmingly, the International Energy Agency (IEA) delivered a significantly bleaker assessment, slashing its 2026 consumption forecast to a contraction of 1.6 million bpd—a sharp reversal from its previous estimate of a 1 million bpd decline last month. The IEA pinned the downgrade squarely on the escalating U.S.-Israeli war against Iran, citing restricted fuel supplies and skyrocketing prices that have begun to aggressively curb end-user consumption across major economies.
Shocking Inventory Build Adds to Bearishness
Compounding the demand worries, the U.S. Energy Information Administration (EIA) reported a stunning increase in commercial crude stockpiles. Inventories surged by 17.4 million barrels to 424.4 million barrels in the week ended August 7—the highest level since June 5 and the largest weekly gain since January 2023.
The build completely blindsided analysts polled by Reuters, who had expected a modest drawdown of 1.4 million barrels. The EIA attributed the glut to a severe slump in U.S. crude exports, which many traders believe is a direct consequence of the war-induced logistical bottlenecks and shifting global trade routes.
Geopolitical Floor Holds Firm
Despite the bearish fundamentals, oil prices have refused to collapse, anchored by the persistent geopolitical premium. The market remains on edge as diplomatic efforts to de-escalate the conflict have stalled. A senior Iranian source stated on Wednesday that talks to revive the interim agreement signed in June—a fragile truce that had temporarily halted military exchanges and allowed for limited diplomatic backchannels—have made zero progress, with no defined timeline for implementation.
The background to this deadlock is a widening U.S.-Israeli military campaign against Iranian nuclear and energy infrastructure, which has disrupted operations in the region’s oil heartlands.
The Fog of War Over Maritime Chokepoints
The immediate risk to physical supply was underscored earlier this week by coordinated attacks on merchant vessels navigating the Strait of Hormuz and the Bab el-Mandeb Strait—two of the world’s most critical maritime chokepoints. Together, these narrow waterways facilitate the transit of roughly 30% of global seaborne crude.
Analysts at Haitong Futures noted that the deteriorating safety situation is now distorting market visibility. “Vessels are being forced to turn off their automatic identification signals to evade targeting,” the firm said in a note. “This reduces transparency in shipping, making it increasingly difficult for the market to track and assess actual supply levels, creating a dangerous informational vacuum.”
As traders weigh the lull from sliding demand against the risk of an immediate supply shock, markets are poised to stay highly volatile. For now, the geopolitical floor has held above the $80 level for WTI, but analysts warn that any breakthrough in U.S.-Iran talks—however unlikely—could quickly erase that premium and trigger a deeper selloff.
