Brent crude on Monday surged past 90 dollars a barrel for the first time since mid-June, as the collapse of a fragile US-Iran ceasefire and thinning tanker traffic through the Strait of Hormuz threatened to push American gas prices over the politically sensitive four-dollar-a-gallon mark.
Oil prices jumped back into uncomfortable territory over the weekend as violence in the Middle East intensified and shipping through one of the world’s most critical energy chokepoints slowed once again. Brent crude’s climb past the 90-dollar threshold marks its highest level since mid-June and represents one of the sharpest reminders yet of how directly the widening US-Iran war is now feeding through into global energy markets and, by extension, into household budgets across the United States.
What’s Driving The Spike?
The immediate catalyst for the surge was the breakdown of the ceasefire agreement between Washington and Tehran, compounded by reported Iranian strikes on energy infrastructure in Kuwait. Iran’s Supreme Leader, Mojtaba Khamenei, accused US President Trump of breaching the agreement and warned of a forceful response should fighting continue to escalate, rhetoric that has done little to calm already jittery energy traders.
US President Trump, for his part, showed no sign of backing down, telling NewsNation he “couldn’t care less” about Khamenei’s remarks. Late Sunday, the US military announced a ninth consecutive night of strikes against Iranian targets, according to MarketWatch, underscoring that the current round of hostilities shows no indication of slowing.
The Iran-US war intensified on Monday as the US military launched a ninth night of strikes after CENTCOM announced the death of another US soldier in the Iranian attack on the Gulf neighbours. According to a US military statement, the soldier was killed on Saturday in northern Iraq after a US military base was attacked. The service member lost his life after the controlled detonation of an unexploded Iranian ordnance on an attack drone.
The Gulf’s Vanishing Buffer
Much of the pressure on prices traces directly to the Strait of Hormuz, the narrow waterway through which a significant share of the world’s seaborne oil passes and which has become the central battleground of the broader conflict.
Tanker traffic through the strait has thinned considerably as fighting has intensified, with both US and Iranian forces contesting control of the passage in recent weeks.
That disruption has compounded a fuel market already under strain from a separate front in the region’s broader conflicts: Ukrainian drone attacks on Russian refineries have helped push Moscow to halt diesel exports, tightening global supplies of refined fuel even as crude prices climb in parallel.
Iran Stops Oil Tanker: Traffic Through Hormuz Grinds Nearly To A Halt
The oil tanker Kavomaleas appears to have stopped in the Strait of Hormuz off the coast of Oman on Monday morning after Iran’s Islamic Revolutionary Guard Corps claimed it had targeted vessels attempting to pass through the waterway, according to Bloomberg.
The product tanker, managed by Greek company Dynacom Tankers Management and chartered to load cargo in the Persian Gulf, began transmitting signals near the Musandam Peninsula indicating it was anchored and carrying no cargo, after an earlier signal placed it in the Gulf of Oman on Sunday, a gap that suggests the vessel may have transited the strait with its transponder deliberately switched off to avoid detection.
The IRGC said separately that four vessels had attempted to pass through the strait via what it called a “dangerous route” while ignoring warnings, all with transponders disabled, and claimed two of them “experienced accidents and stopped.” The UK Maritime Trade Operations agency reported a vessel on fire northwest of Kumzar in Oman, near the Kavomaleas’s last known position, though the cause and the ship’s identity have not been disclosed.
Bloomberg reported that vessel traffic through the Strait of Hormuz had almost completely halted by Monday morning as the confrontation between Washington and Tehran continued to escalate, with new incidents threatening to deepen concerns over the safety of navigation through one of the world’s most critical oil transport corridors.
The reported disruption follows Sunday’s news that Brent crude had surged past 90 dollars a barrel for the first time since mid-June, and comes as CENTCOM confirmed the US had struck Iran for a ninth consecutive night, underscoring how directly the stalled shipping lane and the wider military escalation are now feeding one another.
A Cushion That Is Wearing Thin
Oil markets have so far avoided a more severe price shock thanks to a combination of factors working in the opposite direction, including comparatively weak demand out of China, government stockpile releases, and healthy commercial inventories that have absorbed some of the disruption.
But analysts caution those buffers are increasingly strained, and the Wall Street Journal has separately warned that gas prices could remain elevated for consumers even if crude oil prices eventually retreat, a dynamic tied to bottlenecks in refining capacity and diesel supply that do not necessarily unwind at the same pace as crude benchmarks.
What It Means At The Pump
For American drivers, the most immediate and tangible consequence of the price surge is playing out at gas stations. According to AAA, the latest spike threatens to push the national average price of gasoline above four dollars a gallon as early as Monday, a threshold with outsized political significance in Washington regardless of which party holds power.
Diesel prices, which have broader ripple effects across trucking, shipping and the wider cost of consumer goods, have also climbed back above five dollars in recent weeks, according to separate reporting, a trend directly tied to the same combination of Middle East supply disruption and reduced Russian export volumes now working through the global fuel market.
A Conflict With No Clear Off-Ramp
With both Washington and Tehran continuing nightly exchanges of fire and neither side signalling openness to renewed negotiations, energy analysts say the path of oil prices in the coming weeks will likely track the trajectory of the war itself far more closely than any of the underlying supply-and-demand fundamentals that typically govern crude markets. For now, the ninth consecutive night of US strikes stands as the latest marker of just how far the conflict has escalated since the ceasefire’s collapse, and how directly that escalation is now being felt by drivers thousands of miles from the Strait of Hormuz.
