Commodities August 17, 2026 09:37 PM

Oil edges up as tensions around Strait of Hormuz keep markets on alert

Prices hover near recent highs while U.S.-Iran standoff and uncertain talks over shipping routes sustain supply concerns

By Nina Shah
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Oil prices in Asian trading ticked higher as diplomatic and military tensions between the U.S. and Iran over the Strait of Hormuz showed little sign of easing. U.S. President Donald Trump reiterated American control of the strait, said Washington would not seek an extension of a recently expired ceasefire with Iran, and threatened military action against Oman amid reported talks between Oman and Iran on shipping through Hormuz. Shipping activity remains well below pre-conflict levels, a factor that continues to underpin crude markets.

Oil edges up as tensions around Strait of Hormuz keep markets on alert
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Key Points

  • Geopolitical friction in and around the Strait of Hormuz is supporting oil prices; Brent at $91.09/bbl and WTI at $84.85/bbl as of 21:06 ET (01:06 GMT).
  • A ceasefire signed in mid-June expired on Monday and the U.S. said it will not seek an extension, contributing to heightened supply-risk premia.
  • Commercial ship transits through Hormuz are only a fraction of pre-war levels, reducing effective global crude flows and affecting energy, shipping, and broader markets sensitive to oil supply shocks.

Oil markets in Asia saw modest gains as geopolitical friction around the Strait of Hormuz kept crude close to its recent peaks. Market participants remain focused on competing claims and limited progress toward any durable de-escalation.

By 21:06 ET (01:06 GMT), Brent futures had inched up 0.3% to $91.09 a barrel, while West Texas Intermediate futures were 0.4% higher at $84.85 a barrel.

At the center of the latest price support is a standoff between the United States and Iran. President Donald Trump said the United States retained control over Hormuz and announced that Washington would not seek to extend a ceasefire that had been signed in mid-June and that expired on Monday. He also made a direct threat, saying he would “bomb the s*** out of” Oman should it "get in the way," comments made while talks between Oman and Iran over transit through Hormuz were reportedly continuing.

Iran has denied Washington's characterization of the talks and the U.S. claim of control over the strait. Oman and Iran have signaled engagement in discussions about shipping routes through the chokepoint, but no formal agreement has been announced.

Recent shipping data indicate commercial traffic through the Strait of Hormuz remains a fraction of its pre-war volumes. Industry observers cite fears of Iranian attacks as a deterrent to vessels attempting crossings. The strait had supplied roughly 20% of the world’s oil flows prior to the conflict, and its effective closure has materially reduced available crude supplies.

With these developments, markets are priced with an elevated premium for supply disruption risk. While trading moves were measured on the session, the combination of an expired ceasefire, public U.S. threats of force and ongoing, inconclusive talks between Oman and Iran are keeping risk premia in place.


Context and market implications

  • Prices remain underpinned by geopolitical risk tied to the Strait of Hormuz.
  • Lower-than-normal vessel transits through the narrow waterway have cut effective crude flows versus pre-conflict levels.
  • Public statements by the U.S. administration, including a decision not to seek an extension of the recent ceasefire and threats of military action, are adding to near-term uncertainty for energy markets.

Given the data and comments available, markets are reacting to a constrained supply backdrop rather than material changes in demand expectations. Observed price moves on the session were modest, but the underlying drivers remain geopolitical and therefore subject to rapid shifts depending on future diplomatic or military developments.

Risks

  • Continued or escalated military action around the Strait of Hormuz could further suppress shipping and tighten oil supplies, impacting energy and shipping sectors.
  • Public threats of force and lack of a new, agreed framework for shipping through Hormuz create policy and operational uncertainty for oil markets and related industries.
  • Failure of talks between Oman and Iran to produce a clear, implemented arrangement for safe transit would maintain elevated risk premia in crude pricing.

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