Brent crude climbed to $91.42 a barrel early Monday, its highest level since June 11, and then gave almost all of it back. By midday it traded around $88.28, up about 18 cents on the day, with WTI near $82.61. A five-week high and a flat session, in the same eight hours.
That round trip is the whole story. Two things happened over the weekend that should have pushed oil sharply higher, and one thing happened Monday morning that stopped it. The market spent the session deciding which mattered more, and it has not finished deciding.
The Offer That Capped the Rally
The thing that stopped it: a senior Iranian official told Reuters on Monday that Tehran has received a mediators' proposal for a 10-day ceasefire, intended to revive the interim deal struck last month and open a path to something lasting. Iran's foreign ministry confirmed it had received mediation proposals. Secretary of State Rubio said the United States "always remains open to a diplomatic solution."
Iran has not accepted. No ceasefire is in effect, and the strikes did not pause. But a live, specific, numbered proposal is a different object than the vague talk of the last two weeks, and the market repriced the moment it crossed the wires.
Saturday's diplomacy produced less. Iranian foreign minister Araghchi met his Omani counterpart Sayyid Badr Albusaidi in Muscat on July 18, and the two sides agreed only to hold further technical and political talks. Reporting attributed to a single source describes an Omani draft that would split the Strait of Hormuz into two corridors: a southern lane through Omani waters open under pre-war conditions, and a northern lane through Iranian waters requiring prior Iranian approval but carrying no tolls. That draft has not been confirmed by either government. What is clear is what did not happen. Iran has still not publicly declared Hormuz open or pledged not to attack commercial vessels, which is the exact condition Washington has set for stopping.
Kuwait's Oil Took Real Damage
The first escalation is the one the market has been waiting on for weeks, and it did not land on Iran. Kuwait Petroleum Corporation confirmed that one of its vital oil facilities was hit in Iranian attacks on Saturday, causing significant material damage and some injuries. Kuwait's electricity and water ministry reported a fire at a power generation and desalination plant, a second desalination facility was struck afterward, and the country's airport was hit as well. Kuwait described it as one of the heaviest barrages since the conflict began and accused Iran of targeting civilian infrastructure.
This is the line the war had not crossed. Through five months, the fighting damaged Iranian military sites, threatened shipping, and frightened traders, but it left the oil facilities of the other Gulf producers alone. It no longer does. A confirmed hit on a Kuwaiti oil facility is a different category of event from a drone near a tanker.
On that note, Friday's Basra story deserves a correction in tone. The drone that struck a tanker at Iraq's main southern export terminal caused no damage and no fire, loadings resumed, and Iraq's state marketer SOMO said flatly that the terminal was not the target and that loading continued at normal rates. It was a near miss, not a strike on Iraqi oil. Kuwait is the real thing.
The Houthis Opened a Second Chokepoint
The second escalation turns a threat into a policy. Yemen's Houthis declared a naval blockade against Saudi Arabia, framed as retaliation for the siege of Yemen. Last week the reporting was that Iran had asked the Houthis to be ready to close the Red Sea. This week they have declared a blockade, and aimed it at the largest oil exporter in the world rather than at shipping in general.
The market now has two chokepoints to price instead of one. Analysts estimate that closing Bab el-Mandeb would remove roughly 7% of global oil supply by blocking Saudi barrels routed through the Red Sea, on top of the disruption already running through Hormuz. Hormuz itself is close to shut: only eight ships transited on July 16, the lowest count in three weeks, according to Kpler. War-risk insurance now runs 3% to 10% of hull value against 0.25% before the war, which means a $100 million tanker pays between $3 million and $10 million for a single passage.
Why $88 and Not $100
Because the barrels are still leaving Iran. Nine consecutive nights of US strikes have hit military and naval targets tied to Iran's ability to attack ships. None has hit Kharg Island's oil export terminal, which handles roughly 90% of Iranian crude exports and is still loading, with flows reported above 1.5 million barrels a day. President Trump has repeatedly floated seizing the island and has repeatedly not done it. His own account of the March strikes on Kharg's military sites included the instruction not to touch the oil.
The cushion underneath is the other reason. OPEC+ holds more than 5 million barrels a day of spare capacity, with Saudi Arabia alone sitting on about 3 million, the most since 2009. The catch is that most of that spare capacity sits behind the same strait that is closing, which is why it caps the price without collapsing it.
The forecasts frame the gap precisely. Goldman Sachs carries a base case of $80 Brent in the fourth quarter, but says that if Hormuz stays largely shut for another month, Brent averages above $100 for 2026, with $120 in the third quarter if severe restrictions persist. JPMorgan holds $86 this quarter easing to $80. Reports of Iranian interceptions of vessels over the weekend, and casualty figures from both sides, remain unverified claims.
What Breaks the Standoff
Three things, and the market is watching all of them at once. If Tehran accepts the 10-day ceasefire, the spare capacity and the surplus underneath pull prices back toward the $70s fast. If the Houthi blockade of Saudi Arabia becomes real interdiction rather than a declaration, the second chokepoint starts pricing and $91 stops being the ceiling. And if anyone hits or takes Kharg, the terminal that has survived every escalation of this war, none of the numbers above apply.
Oil spent Monday moving three dollars in each direction and finishing where it started. That is not calm. That is a market with a ceasefire offer in one hand and a widening war in the other, waiting to learn which one is real.
This article is for informational purposes only and does not constitute financial or investment advice. Oil market conditions can change rapidly. Consult a qualified financial professional before making investment decisions.