Crude oil futures settled lower in after-hours trading on Tuesday as markets assessed crude flows through the Strait of Hormuz following signs of progress in US-Iran peace negotiations.
Front-month West Texas Intermediate crude futures were down by 0.7% to $73.37 per barrel, while Brent futures dropped by 0.9% to $77.15/bbl.
ING strategists said the gradual increase in flows through the Strait of Hormuz continues to weigh on the market, while positive signals from US-Iran talks in Switzerland have weighed on sentiment.
US Secretary of State Marco Rubio said on Tuesday that Iran would not be able to levy tolls in the strategic waterway as part of any final agreement with Washington, adding that such an arrangement would violate international law.
"No country is allowed to charge tolls or fees on an international waterway," Secretary Rubio said.
On Tuesday, President Trump said in a social media post that 19 million barrels of oil flowed out of the Strait on Monday, while pointing to falling oil prices.
Kpler strategists said that the US-Iran peace deal, which triggered a temporary easing of sanctions, is expected to provide relief from shipping disruptions in the Strait, but the market remains far from a return to normal trade conditions.
The analysts said the immediate increase in vessel movements reflects the unwinding of a massive backlog rather than a surge in fresh supply.
The latest data show that more commercial vessels are transiting the strategic waterway with their satellite signals switched on, with Kpler reporting that confirmed crossings rose from 32 vessels between June 12-14 to 93 between June 19-21.
However, Oman and Iran agreed on Tuesday to press ahead with discussions on the future administration of navigation in the Strait of Hormuz.
The two countries agreed to establish a joint working group between their foreign ministries to continue discussions on the future framework governing navigation via the Hormuz.
Pressuring crude prices, the US on Monday authorized the sale of Iranian oil and fuels as part of an agreement to end the Middle East conflict.
The US Treasury Department issued a 60-day license that allows Iran to sell its energy products through Aug. 21 and make payments in US dollars. The waiver also allows for the importation of Iranian crude oil and other petrochemical and petroleum products into the US.
Marine Traffic said in a post on X that the recovery in shipping flow was supported by recent diplomatic developments and the temporary general license, which has helped ease immediate compliance uncertainty around approved Hormuz transits until Aug. 21.
Saxo Bank strategists said the temporary license is expected to facilitate the export of some of the estimated 30 million barrels that left Iranian ports last week.