Oil prices fell almost 3 per cent on Thursday to their lowest since the first trading day of ⁠the Iran war, ​as a U.S.-Iran interim deal to end the conflict, reopen the Strait of Hormuz and ease sanctions on Tehran boosted the global supply outlook.

Brent crude futures were down US$1.53, or 1.9 per cent, at US$78.02 a barrel at 9:26 a.m. ET, while U.S. West Texas Intermediate fell US$2.22, ​or 2.9 per cent, to US$74.57 a barrel.

Brent sank to its lowest ‌since March 2, which was the first day of trading after the initial U.S.-Israeli strikes on Iran, while WTI was at its lowest since March 4.

“The selloff extended as energy markets continued to aggressively price in a faster-than-expected return of Iranian barrels following the recent U.S.-Iran memorandum of understanding,” IG market ‌analyst Tony ​Sycamore said in a note.

The ‌14-point memorandum begins a 60-day negotiation period during which Iran will allow toll-free passage ​through the Strait of Hormuz, a key oil and gas ⁠shipping lane. The deal calls for traffic through the strait to be restored ⁠to its full capacity within 30 days.

The preliminary accord defers many of the more difficult issues, such as ​Iran’s nuclear programme, and also requires the U.S. and its partners to come up with a US$300 billion plan to finance Iran’s recovery.

Analysts expect a gradual recovery in flows through the Strait of Hormuz, while industry experts have cautioned that prices may not plummet as demand recovers and inventories are refilled.

Investment bank Goldman ⁠Sachs expects Gulf exports to normalise to pre-war levels by end-July, with crude production recovering by October.

The bank estimates that a normalisation in exports to pre-war levels might be achieved with a 13 million barrel-per-day increase in Hormuz flows from current levels to around 70 per cent of pre-war levels.

BNP Paribas does not currently anticipate a return to pre-war prices and views US$75 per ⁠barrel as a “durable floor for the foreseeable future,” it ​said in a note, given ongoing supply losses and higher demand.

Brent traded around US$60 toUS$70 per barrel ⁠in the first two months of the year before the Iran war.

China, the world’s second-largest oil consumer, is ‌forecast to consume 753 million metric tons in 2026, down 4.9 per cent from 2025 amid a pivot to ​new energy and high oil prices, according to a report published by PetroChina’s research unit.

Ukrainian drones hit the Russian capital’s oil refinery for the second time this week in what Kyiv cast as a demonstration of its growing capabilities.

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