Oil rises $2 as Iran announces closure of Strait of Hormuz following US strikes - Finance news and analysis from Global Banking & Finance Review
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Oil rises $2 as Iran announces closure of Strait of Hormuz following US strikes 

Published by Global Banking & Finance Review

Posted on June 11, 2026

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· Last updated: June 11, 2026

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Oil Jumps Over $2 as Iran Shuts Strait of Hormuz After US Military Strikes

Market Impact and Geopolitical Developments

Oil Price Surge Following Strait Closure

June 11 (Reuters) - Oil prices climbed more than $2 a barrel Thursday as Iran declared the critical energy chokepoint, the Strait of Hormuz, closed after the U.S. launched additional strikes against Iran.

Brent futures rose $2.30, or 2.47%, to $95.40 a barrel, while U.S. West Texas Intermediate (WTI) crude climbed $2.60, or 2.89%, to $92.63. U.S. crude futures gained more than $3 earlier in the session. 

Strait of Hormuz Closure and Military Tensions

Iran's Announcement and Threats

Iran's top joint military command announced the closure of the Strait of Hormuz on Thursday, including oil tankers and commercial ships, saying any vessel that will attempt passage will be shot at.

US Military Response

However, the U.S. military said on X on Wednesday that commercial ships continue to transit in and out of the strait.

It also said no U.S. warships have been struck in the strait, after Iran's state media reported U.S. ships near the waterway were targeted by missiles and drones.

Escalation of Strikes

U.S. forces began launching additional strikes against multiple targets in Iran at 5:15 p.m. EDT (21:15 GMT), the latest in an escalating exchange of attacks that threaten to reignite a full-scale war, which was paused in early April when the two sides agreed to a fragile ceasefire.

Oil Supply and Inventory Effects

Global Oil Shipments Disrupted

Iran's months-long blockade of the strait, which normally carries a fifth of the global oil and gas shipments, have kept oil prices elevated.

US Crude Inventory Changes

Weekly Drawdown

Meanwhile, U.S. crude inventories fell by 7.2 million barrels to 426.5 million barrels in the week ended June 5, the EIA said on Wednesday, compared with analysts' expectations in a Reuters poll for a 4 million-barrel draw. [EIA/S]

Strategic Reserves and Supply Gaps

U.S. crude inventories, including those from strategic reserves, have fallen by 79 million barrels since the Iran war began on February 28, as the world's largest producer stepped into fill supply gaps left by the effective closure of the strait. 

(Reporting by Georgina McCartneyEditing by Shri Navaratnam)

Key Takeaways

  • Iran’s closure of the Strait of Hormuz—through which ~20% of global oil flows—sends oil prices sharply higher amid geopolitical escalation, despite U.S. claims that commercial ships continue to transit (lemonde.fr).
  • U.S. crude inventories fell by 7.2 million barrels in the week to June 5—well above the 4 million‐barrel forecast—drawing stockpiles down further since the conflict began (investing.com).
  • Although supply disruptions drive near-term price spikes, pre‑war oversupply, alternative pipeline routes, and strategic reserve releases have so far helped temper a full-blown energy crisis (axios.com)

References

Frequently Asked Questions

Why did oil prices rise on June 11?
Oil prices rose due to Iran declaring the closure of the Strait of Hormuz after the US launched strikes, raising supply concerns.
What is the significance of the Strait of Hormuz?
The Strait of Hormuz is a key chokepoint for global oil and gas shipments, carrying about a fifth of global supply.
Did the US confirm that commercial ships were blocked in the Strait of Hormuz?
The US military stated commercial ships continued to transit in and out of the strait despite Iran's closure announcement.
How much did US crude inventories fall during the week ended June 5?
US crude inventories fell by 7.2 million barrels to 426.5 million barrels in the week ended June 5, according to the EIA.
What triggered the closure of the Strait of Hormuz by Iran?
Iran announced the closure following additional US strikes on multiple targets in Iran, escalating military tensions.

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