The Brief

Brent crude surged past $119 a barrel on Sunday — its highest level since 2022 — before collapsing back below $90 after President Trump told CBS News the Iran war was “very complete” and could end soon. Oil prices have risen roughly 50% since U.S.-Israeli strikes on Iran began on February 28, making the Strait of Hormuz closure the largest oil supply disruption in recorded history.

The Report

Brent crude settled up 6.76% at $98.96 per barrel on Monday after touching an intraday high of $119.50, a level not seen since Russia’s invasion of Ukraine in 2022. West Texas Intermediate settled at $94.77, up 4.26%. Both benchmarks then fell sharply in after-hours trading — Brent dropping 9.5% to $89.58 — after Trump’s remarks that the conflict was running well ahead of its initial four-to-five-week timeline.

The price swing caps a week of historic volatility. U.S. crude gained 36% last week, the largest weekly gain in the history of futures trading dating back to 1983. Brent rose 27% over the same period. The trigger was Iran’s effective closure of the Strait of Hormuz in retaliation for Operation Epic Fury, the joint U.S.-Israeli strikes that began February 28, killing Supreme Leader Ali Khamenei and targeting nuclear sites, military facilities, and energy infrastructure.

The Strait carries roughly 20 million barrels of oil per day — about one-fifth of global seaborne trade. Tanker traffic through the waterway has fallen to near zero, according to shipping data, with more than 150 vessels anchored outside. Iraq has already cut 1.5 million barrels per day as onshore storage fills. JPMorgan estimates total production losses could exceed 4 million barrels per day by end of week if the strait remains closed. Rapidan Energy Group called it the biggest oil supply disruption in history — more than double the previous record set during the Suez Crisis of 1956–57.

G7 finance ministers and the IEA convened an emergency session on Sunday to authorise a coordinated release of 300 to 400 million barrels from strategic petroleum reserves — the largest such intervention in the IEA’s 52-year history. Brent fell from $119 to $106 on the announcement before sliding further on Trump’s comments. Qatar’s energy minister warned that if the strait remains closed, Gulf producers could declare force majeure, with prices potentially reaching $150. Iran’s Revolutionary Guard threatened $200 per barrel.

At the pump, the national average price of gasoline has risen to $3.48 per gallon, up 58 cents from a month ago, according to AAA. California drivers are paying $5.20. Analysts widely expect the national average to cross $4 within weeks if crude stays above $90. The IMF has estimated that every sustained 10% rise in oil prices adds 0.4 percentage points to global inflation and shaves 0.15 points from growth.

Asian markets bore the initial shock. Japan’s Nikkei fell more than 5% and South Korea’s KOSPI dropped 6% before U.S. equities staged a reversal — the Dow closing up 0.50%, the S&P 500 gaining 0.83%, and the Nasdaq rallying 1.38% — after Trump’s signal that the conflict could conclude soon.

The Angle

The most important number in the past week was not $119. It was nine. Nine days of disruption to 20% of global oil supply — already more than double the previous record — and the architecture that was supposed to prevent this exact scenario did not prevent it. It managed it, partially, after the fact. The G7’s reserve release was the largest ever attempted, and it bought the market roughly thirteen dollars of relief before the next headline moved prices again. Strategic reserves are a buffer, not a solution. They buy time. The question is what the time is being used for.

What the whipsaw reveals is the distance between two maps of the same situation. One map is geopolitical: war, retaliation, strait closure, diplomacy, Trump on a phone call saying the word “complete.” Markets respond to that map in minutes. The other map is structural: the global economy’s energy infrastructure was built on the assumption that a narrow waterway off Iran’s coast would remain open, and a century of industrial planning never produced an alternative to that assumption. The first map changes hourly. The second has not changed in decades.

Trump’s signal moved oil nearly thirty dollars in a single session. That is not a market responding to fundamentals. It is a market responding to the word choices of one person, because the underlying vulnerability is so extreme that the difference between $90 and $120 oil is a phone interview. The Strait of Hormuz has been the single most consequential chokepoint in the global economy for half a century. Everyone knew it. The contingency was to hope it stayed open.

The reserves will buy weeks, not months. The structural exposure remains what it was before February 28 — only now it has a price tag attached.