Shibbir Ahmed, New York — Iran has said the strategically vital Strait of Hormuz will remain closed despite efforts to revive regional diplomacy, as a planned meeting between Iran and Gulf states was postponed and concerns over global energy supplies continued to grow.

Iranian Foreign Minister Abbas Araghchi said an agreement reached with Oman over arrangements for maritime traffic through the strait would not mean the waterway would be reopened. Tehran has linked any reopening to the United States returning to commitments made under an earlier peace understanding.

The planned meeting in Oman, which was expected to bring together Iran, Iraq and Gulf Arab states to discuss navigation through the Strait of Hormuz, was postponed on Monday. Oman’s Foreign Minister Badr Albusaidi said the delay was intended to allow more time to build consensus among the participating countries.

The diplomatic setback comes as tensions around the region’s major energy routes continue to rise. Shipping traffic through Hormuz has fallen sharply, with only a small number of commodity vessels recorded passing through the waterway over the weekend, well below the recent daily average.

The Strait of Hormuz is one of the world’s most important energy chokepoints, carrying a significant share of global crude oil and liquefied natural gas supplies. Disruption to the route has already contributed to a sharp increase in oil prices, with Brent crude rising above $107 a barrel on Monday.

Iran has also warned vessels that violate its maritime protocols. Its Strait Authority issued an updated list of 77 vessels accused of violating Iranian rules and warned that sanctioned ships could face penalties including fines, detention or confiscation.

The stalled diplomacy has increased fears that the disruption could persist, putting further pressure on global energy markets, shipping costs and economies dependent on Gulf oil and gas.

SHibbir Ahmed, WASHINGTON DC — Iran’s Islamic Revolutionary Guard Corps (IRGC) says it has captured a U.S. unmanned underwater vehicle near the entrance to the Strait of Hormuz, in the latest development in the escalating confrontation between Tehran and Washington.

Iranian state media identified the vessel as a Dive-LD, a large autonomous underwater vehicle manufactured by California-based defense company Anduril. The approximately 19-foot (5.8-meter) unmanned submersible is designed for missions including seabed mapping, mine detection, intelligence gathering and inspection of underwater infrastructure. The IRGC described the operation as a complex intelligence and military mission and claimed that Iranian forces had “trapped” one of the most advanced unmanned submarines operated by the United States.

However, the U.S. military gave a significantly different account of the incident. A Pentagon spokesperson acknowledged that a U.S. underwater drone had been lost, but said the vehicle had malfunctioned more than a day earlier while surveying regional waters in support of ongoing operations. According to the Pentagon, the drone was an older model and did not carry classified sonar or radar equipment or collect sensitive data.

Anduril also confirmed the loss of one of its underwater vehicles and emphasized that the Dive-LD was designed to operate in dangerous environments where losing the vehicle was considered a possibility.

Reuters said it could not independently verify Iran’s claim that it had captured the vehicle through a deliberate intelligence operation. The Dive-LD can reportedly operate for up to 10 days and is designed to reach depths of approximately 6,000 meters (19,700 feet). The system is part of the U.S. military’s growing use of autonomous underwater and surface vessels for surveillance, mine detection and other missions without putting American personnel directly at risk.

The incident comes as tensions around the Strait of Hormuz continue to rise. Commercial shipping through the strategic waterway has fallen sharply amid the ongoing U.S.-Iran confrontation, while oil prices have climbed above $100 a barrel amid fears of further disruption to global energy supplies.