The Hormuz Deal Is Done, But the World's Oil Crisis Is Far From Over

A Billion Barrels Gone — and the Clock Is Ticking

The Strait of Hormuz is open again. That's the good news. The bad news is that nearly four months of war between the U.S. and Iran have left the global oil market in a hole so deep that simply reopening a shipping lane may not be enough to dig the world out. According to analytics firm Kpler, the world lost 1.15 billion barrels of oil supply during the conflict. That's not a rounding error. That's a crisis with a very long tail.

The reopening comes after President Trump and Iranian President Masoud Pezeshkian signed a memorandum of understanding on Wednesday that aims to end the U.S.-Iran war. Under the agreement, Iran is obligated to allow commercial vessels to transit the Strait of Hormuz without paying tolls for 60 days. Early signs were cautiously encouraging — Vice President JD Vance told reporters that Iran had not fired on ships in Hormuz for two consecutive nights, saying, "So far they are honoring their end of the commitment."

Reserves at Historic Lows

But the damage already done to global energy stockpiles is staggering. The International Energy Administration's strategic petroleum reserves are at their lowest levels since 1990, the American emergency reserve is at a 43-year low, and commercial inventories have hit operational stress levels. That's not just a number on a spreadsheet — it represents a shrinking buffer between consumers and a potential energy shock.

In mid-March 2026, the Trump administration announced the largest single-country release of emergency oil reserves in history — 172 million barrels — as part of a coordinated 400-million-barrel release by 32 nations in response to the closure of the Strait of Hormuz. That massive intervention bought time. But time is running short. At the G7 in Versailles on Wednesday, President Trump issued a stark warning: "You want to see bedlam? We run out of reserves in about four weeks."

Why Reopening the Strait Isn't a Quick Fix

Here's the uncomfortable math: even with tankers moving again, the world can't simply refill what's been lost overnight. Even if the global oil market started producing nearly 5 million more barrels of supply than customers demanded — as the International Energy Agency predicts — it would take around a year to recover the 1.15 billion barrels of lost supply. Pipelines, tanker schedules, and refinery capacity don't flip back on like a light switch.

Analysts at RBC Capital Markets warned that "even if a deal is done tomorrow, it will probably take six weeks to unbottleneck the strait, only adding to pressure in inventories during peak summer demand season." That means consumers will feel the pain at the pump well into the summer months. Matt Smith of Kpler was blunt: "Regardless of what happens in the coming weeks in the Strait of Hormuz, US consumers are in for higher prices in the summer months."

What Comes Next

Markets, for now, have been buoyed by optimism about the deal. When the strait first shut down after the U.S. and Israel launched their war on Iran, analysts predicted crude prices could skyrocket as high as $200 a barrel — a catastrophe that was avoided largely because massive releases from oil reserves blunted the impact. But that cushion is now nearly gone.

The geopolitical chapter may be closing, but the economic one is still being written. As energy analyst Dan Pickering put it, "At some point physical barrels actually matter. If you lose those barrels, that matters." But the market isn't always logical — and optimism has a way of delaying pain rather than preventing it. The world's energy system dodged a catastrophic worst-case scenario. Now it faces something almost as hard: a long, slow, expensive recovery.