Trump reimposes Iran blockade on 20% of global crude supply

The renewed blockade cuts off the Strait of Hormuz to a fifth of daily crude traffic, sending oil stocks higher as emergency reserves hit a multi-decade low.

The reimposed US naval blockade on Iranian ports threatens to choke off the Strait of Hormuz — which carried a fifth of the world's crude before the war — as America's strategic petroleum reserves sit at their lowest level in decades, limiting the government's ability to counter rising prices.

"Every barrel that doesn't move through Hormuz tightens a market already pricing in disruption," said Omar Tariq, oil and gas analyst at Edgen. "The depleted SPR removes the government's primary cushion against price spikes, leaving producers and consumers fully exposed to supply shocks."

The US Central Command completed its seventh consecutive night of airstrikes Friday, hitting surveillance sites, military logistics infrastructure and underground weapons storage across central and southern Iran. Iran retaliated by striking a Kuwait desalination plant and oil facility, injuring several workers and forcing power generation units offline. Iranian authorities reported at least 50 civilians killed and more than 500 wounded in three weeks of US strikes, while 14 American service members have died and 427 have been wounded since the conflict began Feb. 28.

The blockade gives President Trump leverage to force negotiations over the strait's status, but it also risks sustained crude prices above $100 a barrel — feeding inflation and undercutting the administration's economic agenda. Iran's deputy foreign minister, Kazem Gharibabadi, said Tehran is suspending its commitments under the interim deal signed a month ago, snapping another fragile thread in diplomatic efforts.

Oil Producers Gain as SPR Cushion Vanishes

US oil producers stand to benefit most from the supply squeeze. Exxon Mobil, Chevron and major shale operators gain pricing power when global crude tightens, and the blockade effectively removes Iranian exports — roughly 1.5 million barrels a day before the war — from the market. The bullish setup for producers contrasts with the pain awaiting consumers: higher gasoline prices and broader inflationary pressure across the economy.

The US previously tapped strategic reserves to suppress prices during earlier supply scares, but those reserves are now at their lowest level in decades, limiting the government's ability to intervene. The Energy Department has not disclosed exact inventory figures since the conflict escalated, but analysts estimate the reserve holds less than 400 million barrels — down from more than 600 million barrels in early 2022.

Strait of Hormuz Remains the Flashpoint

Iran effectively closed the strait to commercial shipping after the war began, demanding sole control and fees from vessels transiting the waterway — a position the US and its allies reject as a violation of international maritime law. Crossings through the strait fell to a three-week low in recent days, according to an international shipping tracker.

Trump has threatened to target Iranian power stations and bridges unless Tehran negotiates. "We're going to knock out all their power plants. We're going to knock out all their bridges unless they get to the table and negotiate," Trump said in a Fox News interview. The US military has already struck bridges and a communications tower near Bandar Abbas, Iran's main port on the strait, and toppled a large surveillance tower in the southern city of Chabahar.

More than 50,000 American service members are deployed across the Middle East, and both sides have expanded targeting to include civilian infrastructure relied on by millions. The interim deal that paused hostilities a month ago has effectively collapsed, with no new mediation efforts announced. US Secretary of State Marco Rubio said the US remains open to negotiations but that any deal "has to be real."

This article is for informational purposes only and does not constitute investment advice.