# Iran conflict boosts US Gulf oil prices to highest since 2020 | Reuters

> US Gulf crude prices rose to their highest since 2020 as the closure of the Strait of Hormuz forced several countries, including Iraq, to curb output. Flows of medium and heavy sour crude from the Persian Gulf are now largely cut off, and additional production cuts were announced.

- Date: 2026-03-06 · published 2026-03-06T12:00:00.000Z
- Category: geopolitics · region US · magnitude high
- Page: https://feedsoft.ai/events/5575-iran-conflict-boosts-us-gulf-oil-prices-to-highest-since-2020-reuters
- Commodities: [Crude Oil (WTI)](https://feedsoft.ai/c/WTI.md), [Crude Oil (Brent)](https://feedsoft.ai/c/BRENT.md), [ULSD / Diesel](https://feedsoft.ai/c/DIESEL.md)

## Why it matters

Cut-off of medium and heavy sour crude tightens supply of the grades refiners rely on, lifting Gulf crude prices. Higher crude costs raise diesel and fertilizer costs for feed producers and support energy-linked commodity prices.

## Read by commodity

- WTI: bullish ▲
- BRENT: bullish ▲
- DIESEL: bullish ▲

## Linked price moves

| Commodity | Date | Window | Change % | z-score | Why linked |
| --- | --- | --- | --- | --- | --- |
| BRENT | 2026-03-06 | 1 | +8.3% | 3.2 | Dated March 6, it reports that Hormuz closure forced Iraq and others to cut output and cut off Gulf sour crude flows, tightening supply and lifting crude prices. |
| BRENT | 2026-03-06 | 5 | +34.2% | 7.0 | Cutoff of Gulf sour crude flows and production cuts by Iraq and others tightened physical supply and lifted prices. |
| BRENT | 2026-03-05 | 1 | +8.6% | 3.3 | Hormuz closure cutting Iraqi and Gulf sour crude flows tightens physical supply and supports Brent. |
| WTI | 2026-03-09 | 5 | +33.1% | 6.2 | Cutoff of Persian Gulf sour crude and Iraqi output curbs lifted US Gulf crude prices to their highest since 2020. |

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| WTI | 2022-03-06 | [Oil price surges to highest since 2008 on delays in Iranian talks \| Reuters](https://feedsoft.ai/events/6283-oil-price-surges-to-highest-since-2008-on-delays-in-iranian-talks-reuters.md) | -5.5% | -14.2% |
| WTI | 2026-03-03 | [Oil prices jump nearly 5%, settle at highest since January 2025 on Middle East conflict \| Reuters](https://feedsoft.ai/events/5229-oil-prices-jump-nearly-5-settle-at-highest-since-january-2025-on-middle-east.md) | +33.1% | +46.3% |
| WTI | 2026-09-07 | [Oil prices rise to six-week highs on worsening Middle East conflict \| Reuters](https://feedsoft.ai/events/17631-oil-prices-rise-to-six-week-highs-on-worsening-middle-east-conflict-reuters.md) | +9.3% | +3.6% |
| WTI | 2026-05-17 | [Oil prices rise 3% to two-week high on Iran war supply concerns \| Reuters](https://feedsoft.ai/events/19430-oil-prices-rise-3-to-two-week-high-on-iran-war-supply-concerns-reuters.md) | -8.1% | -22.7% |
| WTI | 2018-05-09 | [Oil jumps to highest since 2014 after US quits Iran deal](https://feedsoft.ai/events/65180-oil-jumps-to-highest-since-2014-after-us-quits-iran-deal.md) | +3.5% | -6.0% |
| BRENT | 2022-03-06 | [Oil price surges to highest since 2008 on delays in Iranian talks \| Reuters](https://feedsoft.ai/events/6283-oil-price-surges-to-highest-since-2008-on-delays-in-iranian-talks-reuters.md) | -4.6% | -13.0% |
| BRENT | 2026-03-03 | [Oil prices jump nearly 5%, settle at highest since January 2025 on Middle East conflict \| Reuters](https://feedsoft.ai/events/5229-oil-prices-jump-nearly-5-settle-at-highest-since-january-2025-on-middle-east.md) | +24.7% | +51.3% |
| BRENT | 2026-09-07 | [Oil prices rise to six-week highs on worsening Middle East conflict \| Reuters](https://feedsoft.ai/events/17631-oil-prices-rise-to-six-week-highs-on-worsening-middle-east-conflict-reuters.md) | +12.0% | +18.6% |

## Sources

- reuters.com: https://www.reuters.com/business/energy/iran-conflict-boosts-us-gulf-oil-prices-highest-since-2020-2026-03-06/

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.