New flashpoint over access to Strait of Hormuz

On July 12, Iran’s Islamic Revolutionary Guard Corps said it fired a warning shot at a vessel it accused of using an unauthorized route and declared the Strait of Hormuz closed. The announcement heightened concern over access to one of the world’s most important oil shipping lanes. U.S. Central Command responded that the waterway remained open to lawful transit, and U.S. forces were deployed to ensure freedom of navigation. This produced a sharp contrast between Iranian and U.S. statements on whether the strait was open or closed.

The Joint Maritime Information Center, a U.S.-led naval advisory body, stated that a southern route through Omani waters remained available for two-way traffic. However, it assessed the overall security threat level in the strait as severe. Mariners were warned to expect radio communications with naval forces and to be alert to potential risks including mines. These warnings underscored that navigation, while technically possible, was taking place under significant hazard.

Against this backdrop, Oman stepped up mediation efforts in Muscat. During talks there, Omani officials drafted a proposal to manage navigation through the Strait of Hormuz by reopening two distinct corridors. The plan envisaged a southern route passing through Omani waters and a northern route closer to Iran. Iranian foreign minister Abbas Araghchi travelled to Muscat for discussions on this framework.

The proposal aimed to structure traffic flows amid differing U.S. and Iranian interpretations of an interim accord on reopening the waterway. While details of any broader agreement were not disclosed in the latest reports, the Muscat talks positioned Oman as a key intermediary between the parties. The existence of a functioning southern corridor through Omani waters aligned with the message from maritime authorities that at least one channel remained operational despite Iran’s closure claim.

Ship-tracking data during the weekend showed a notable slowdown in activity. Reporting based on Kpler data recorded six vessels transiting the Strait of Hormuz on Sunday, the lowest figure in several weeks. Many tankers were also observed switching off automatic identification system transponders while crossing, making it harder to monitor movements in real time. The combination of reduced visible transits and higher threat levels signaled that commercial operators were reacting cautiously to the security environment.

The Joint Maritime Information Center’s severe threat assessment highlighted the practical challenges facing shipowners and crews. The possibility of encountering mines or other hazards increased operational risk, even for ships using the southern corridor through Omani waters. Advisories about expected radio contacts with naval forces also indicated close military monitoring of traffic. Overall, commercial shipping continued but under tighter security conditions and heightened uncertainty.

Energy markets responded to the latest tensions and Iran’s announcement about the strait. Benchmark crude prices, including Brent and U.S. contracts, rose roughly 3–4% after the weekend’s developments. The price move reflected concerns that any sustained disruption or perceived risk around Hormuz could affect global oil supply flows.

The combination of conflicting official statements, active naval patrols, and ongoing mediation highlighted both the fragility and the importance of the strait. While at least one route through Omani waters remained available, the situation demonstrated how quickly political and military developments can affect shipping patterns and energy prices. Further outcomes will depend on whether diplomatic efforts in Muscat translate into a stable arrangement for managing traffic through both proposed routes.