Brent at $91 as Five OPEC+ Output Increases Fail to Reverse Iran-Conflict Gains
Five consecutive OPEC+ production increases have failed to reverse a roughly 26% Brent price gain since US and Israeli strikes on Iran began in late February.
ICE Brent crude front-month closed at $91.04 a barrel on Friday (2026-07-31), roughly 26% above the levels that prevailed just before the United States and Israel launched their first strikes against Iran in late February. Five consecutive OPEC+ monthly output increases have done little to bring that gain down.6,5
The resilience of crude owes less to deliberate OPEC+ restraint and more to physical supply constraints that successive output-hike resolutions cannot override. Analysts said the decisions would have little impact since most OPEC+ members are unable to meet their production targets because of the Strait of Hormuz closure or, in Russia's case, infrastructure attacks that have eroded its production capacity. On paper, the group keeps expanding supply. In practice, the barrels are not arriving.1,2,3,5
The price path since the conflict began has not been a straight line. ICE Brent front-month surged to roughly $94 to $97 a barrel in the first week of June after Israel launched renewed strikes on Lebanon and Iran struck back. Reuters reported the contract at $94.52 as of 1304 GMT on Monday (2026-06-08), having already gained more than 5% earlier in that session before Iran announced its wave of attacks on Israel was over.5
By the week of 29 June (week of 2026-06-29), Brent had retreated to an interim low. The contract then bounced roughly 8.5% from that trough, trading at just over $76 by Wednesday (2026-07-08) after renewed US attacks on Iran and a 3% gain on Tuesday (2026-07-07) following attacks on Hormuz-bound tankers. The subsequent climb back toward $91 by month's end underlines how embedded the geopolitical floor has become.7
OPEC+ has nonetheless kept announcing increases. Seven member countries agreed on Sunday (2026-06-07) to lift production targets by 188,000 barrels per day starting in July, according to OPEC data. A fifth consecutive monthly hike followed in early July (2026-07-05) for August, with the group citing declining prices as tensions appeared to ease temporarily.4,6
The easing proved short-lived. US strikes resumed on Wednesday (2026-07-08), and the tanker attacks on Tuesday (2026-07-07) reinforced how exposed physical crude flows remain. Analysts said additional supply is unlikely to fully offset market concerns because several OPEC+ members remain unable to achieve their targets due to logistical disruptions and export constraints.7,3
The diplomatic backdrop has darkened. Renewed hostilities have weakened hopes of a broader peace agreement between Washington and Tehran that many market participants believed could eventually lead to the reopening of the strait. Iran warned after June's attacks that it would respond more harshly if Israel continued strikes on Lebanon.5,3
NYMEX WTI crude front-month closed at $84.67 on Friday (2026-07-31). When Reuters reported on Monday (2026-06-08), WTI had already risen approximately 37% from the eve of the conflict, outpacing Brent's 31% gain at that stage — a reflection of landlocked differential tightening as Middle Eastern barrels dropped out of global flows. Both contracts have since pulled back from those peaks but remain well above pre-conflict levels.5
Any diplomatic channel between Washington and Tehran capable of reopening Hormuz transit remains the single development most able to unwind current prices. Until that materialises, OPEC+ output declarations will remain largely symbolic for the physical market, and the gap between declared targets and deliverable barrels will keep crude elevated into the second half of August.3,5