Iran has renewed its claim to unilateral authority over shipping in the Strait of Hormuz, warning Gulf neighbors against aligning with the United States.
The statement, issued on Friday, follows a recent attack on a vessel near Oman that underscored the fragility of transit security in the region.
5% as reports indicated tankers were resuming transit through the strait, suggesting a temporary easing of immediate supply fears.
Channel NewsAsia reported the development, noting Tehran's insistence on its right to manage maritime traffic despite international concerns.
Brent crude prices have shown volatility in response to shifting risk premiums.
Earlier in the day, Brent fell 3.5% as reports indicated tankers were resuming transit through the strait, suggesting a temporary easing of immediate supply fears.
However, Iran's latest rhetoric reintroduces uncertainty, potentially capping any further downside for oil prices.