• Oil prices climbed on Monday as diplomatic efforts between the U.S. and Iran showed few signs of a breakthrough, keeping a geopolitical risk premium embedded in crude.
  • Brent settled at $103.08 per barrel, up 3.86%, while WTI rose 1.81% to $92.16, with the U.S. benchmark up about $2 a barrel intraday.
  • Traders remain focused on the Strait of Hormuz, a chokepoint for roughly 34% of global crude trade, where the risk of supply disruption continues to underpin prices.

Diplomatic Stalemate Fuels Rally

Oil futures extended their gains on Monday, with U.S. crude rising by about $2 a barrel as markets saw little evidence of a durable U.S.–Iran diplomatic breakthrough and continued to price in a meaningful risk of disrupted Middle East energy supply. Brent crude settled at $103.08 per barrel, up 3.86%, while West Texas Intermediate settled at $92.16, up 1.81%. The move higher came after Iranian President Masoud Pezeshkian said Iran would not surrender, following U.S. President Donald Trump’s warning that the U.S. could “annihilate” Iran — rhetoric that caused traders to reassess the probability of a near-term settlement.

The latest leg up extends a volatile stretch for energy markets. On September 22, Brent had settled at $99.25 and WTI at $94.59 as diplomatic discussions were initially interpreted as reducing disruption risk. But supply concerns quickly reasserted themselves, with prices rebounding despite indications of increased Saudi flows and a partial restart of Saudi Arabia’s East-West Pipeline. According to people familiar with the matter, traders remain focused on the larger risk to Gulf production and shipping rather than on incremental alternative capacity.

Shipping Risk Remains the Key Driver

The market is responding not just to Iranian production but to shipping risk in the Strait of Hormuz, through which roughly 20 million barrels per day of oil and petroleum products moved in 2025 — about 34% of global crude trade. Earlier this year, analysts cited a roughly $3–$4-per-barrel Iran-related risk premium in U.S. crude prices even before the later escalation. A credible agreement that protects shipping and relaxes confrontation could remove part of that premium quickly, but the latest headlines suggest investors do not yet view a durable resolution as likely.

“The risk premium is doing the work right now,” said one trading desk source, who asked not to be identified. “Every headline out of Washington or Tehran moves the curve.”

The underlying political issue remains the unresolved confrontation between Washington and Tehran, centered on security, Iran’s nuclear program, sanctions, regional military activity, and safe maritime access through the Gulf. U.S. sanctions have long constrained Iranian oil exports and access to international finance, and the present conflict has added a physical maritime constraint: after a U.S. naval blockade was reinstated in mid-July, Iran had gone weeks without meaningful crude exports through Hormuz, with August loadings falling to roughly 220,000–255,000 barrels per day from around 2 million barrels per day in March.

Broader Economic Consequences

The surge in crude prices has implications beyond the energy patch. Higher oil feeds into more expensive gasoline, diesel, jet fuel, freight, and household energy bills, although the pass-through varies by country, taxes, subsidies, refinery margins, and currency movements. IMF research estimates that a 10% rise in global oil-price inflation raises domestic inflation by about 0.4 percentage points on average at impact. Chicago Fed scenario analysis of the 2026 shock estimated a possible 0.81–1.66 percentage-point drag on U.S. 2026 growth, with inflation and interest rates rising in its modeled scenarios.

Asian buyers are particularly exposed: China and India together received 44% of Hormuz oil exports in 2025, according to the IEA. Energy equities and some commodity-linked currencies may gain, while airlines, transport firms, petrochemical users, and other fuel-intensive businesses face margin pressure. Risk assets could weaken if investors fear a more persistent inflation-and-growth shock.

The diplomatic stakes are unusually high. Near term, prices are likely to remain exceptionally sensitive to headlines from U.S.–Iran contacts, official statements, tanker-transit data, Saudi export-route availability, and weekly U.S. inventory figures. A verified diplomatic arrangement or materially improved vessel passage would likely push crude lower by reducing the risk premium; renewed military escalation could drive prices sharply higher.

A spokesperson for the U.S. State Department did not immediately respond to a request for comment. Iran’s mission to the United Nations also did not respond to an email seeking comment.

Two-Way Market

There are also signs of a two-way market: before the latest rebound, optimism about U.S.–Iran discussions and increased Saudi supply had driven crude lower for several sessions. That demonstrates that the market still sees diplomacy as capable of changing the supply-risk outlook quickly — but the latest headline indicates investors do not yet view a durable resolution as likely.

Correction: An earlier version of this article misstated the settlement date for Brent and WTI. It was September 23, not September 22.