The prices of the two major crude oil grades further declined on Tuesday as investors kept a close watch on crude flows through the Strait of Hormuz following signs of progress in US-Iran peace talks.
Brent futures lost 82 cents or 1.1 per cent to trade at $77.08 per barrel, while the US West Texas Intermediate (WTI) futures gave up 65 cents or 0.9 per cent to sell for $73.21 a barrel.
The market continued to edge lower after the US granted Iran a 60-day sanctions waiver following initial peace talks, while hostilities in Lebanon eased under a broader agreement.
Investors are cautiously watching how quickly Middle Eastern producers can resume oil production and exports following damage from the war, and whether more ships will enter the region.
After US Vice President JD Vance left Switzerland on June 22 after a round of talks over the weekend, President Donald Trump issued a warning to Iran that “I will do what I have to do” if it does not stick to its agreement with the US.
Mr Vance had noted movement on a framework toward reaching a final peace deal within 60 days, including the guarantee of safe passage through the Strait of Hormuz, an end to fighting in Lebanon, and Iran’s acceptance of visits by international nuclear inspectors.
On Tuesday, Oman and Iran agreed to press on with discussions about the future administration of navigation in the Strait of Hormuz, through which 20 per cent of crude and liquified natural gas (LNG) passes.
US Secretary of State Marco Rubio said on Tuesday that Iran would not be able to charge tolls in the key waterway as part of any final agreement with the United States, saying such an arrangement would violate international law.
According to the International Energy Agency (IEA), the world has lost millions of barrels of oil and gas supply since the Iran war closed the strait, putting the shut-in data at more than 14 million barrels per day of oil output or about 14 per cent of world demand.
Meanwhile, President Trump claimed that 19 million barrels of oil flowed out of the strait on Monday, and pointed to falling oil prices in a social media post on Tuesday.
The American Petroleum Institute (API) estimated that crude oil inventories in the US fell by 765,000 barrels in the week ending June 19. Official data from the US Energy Information Administration (EIA) will be released later on Wednesday.