Oil prices rose on Monday after shipping through the Strait of Hormuz slowed while talks between U.S. and Iranian officials in their first meeting under an interim peace deal were off to a bumpy start.

Brent crude futures climbed in the session as traders assessed the renewed geopolitical pressure on one of the world’s most critical energy chokepoints.

The slowdown in transit activity heightened concerns about potential supply disruptions, even as diplomatic channels remained open.

The market reaction comes after U.S. President Donald Trump threatened to resume attacks on Iran through a social media post on Sunday.

The statement cast doubt on the durability of the fragile interim peace agreement reached just last week, prompting investors to price in elevated route risk.

Iran has since reopened the Strait of Hormuz as U.S.-Iran talks entered their second day, but the initial friction in negotiations suggests that stability in the corridor remains uncertain.