Iran expands Strait of Hormuz surveillance amid surge in attacks and falling oil transit

Iran says it has expanded surveillance in and around the Strait of Hormuz by deploying new naval units east of the waterway, as attacks on shipping rise and oil transit falls again. The announcement comes amid heightened tension over one of the world's most important energy chokepoints, where maritime traffic has faced what the report describes as the worst spate of attacks since the start of the war involving the United States and Israel against Iran. The move is being presented by Tehran as part of a wider effort to monitor vessels more closely and maintain pressure in the disputed waterway.

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According to the report, Iran's navy said the new operational units have been deployed east of the Strait of Hormuz and across the Sea of Oman and the Arabian Sea after a tanker was identified as having sustained damage and caught fire. The navy said the units would maintain real-time surveillance of maritime traffic and what it described as enemy activity in the region. It also warned vessels not to switch off their transponders and urged them to coordinate with Iranian armed forces for safe passage through the area.

The report says the latest announcement follows a surge in attacks in the waterway and a renewed fall in oil transit, after crude flows had risen back to pre-war levels in September. A maritime tracking firm cited in the report said 10 tankers were struck in the strait, underscoring the scale of the disruption. An Iranian official also told Reuters that Tehran had begun using different offensive tactics against vessels it considered to be violating its restrictions about 10 days ago, and said this had contributed to the increase in attacks.

The Strait of Hormuz is a narrow passage linking the Gulf to the Sea of Oman and the Arabian Sea, and it remains central to global energy transport. Any sustained disruption there can affect oil flows well beyond the region, which is why even limited changes in security conditions are closely watched by governments and markets. The latest Iranian deployment adds another layer of uncertainty to a route already under pressure from military confrontation, sanctions and competing claims over control of maritime movement.

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The report also places the development in the context of a broader confrontation between Tehran and Washington. It says the United States has maintained a naval blockade of Iran's southern ports, while sanctions have continued to tighten. Tehran has repeatedly said it will use both military and diplomatic means to pressure Washington to meet its demands over reopening the strait, suggesting that maritime security is being used as part of a wider strategic contest.

The timing is significant because the report says oil transit had only recently recovered to pre-war levels before falling again. That makes the latest surge in attacks more than a local security issue, since it directly affects the reliability of a major export route for crude. The warning to keep transponders on also indicates concern over vessel identification and tracking, which are key to reducing the risk of miscalculation in crowded shipping lanes.

The report cites a political scientist at the University of York as saying the increased attacks and their effect on energy flows show how fragile the strait remains as a pathway for oil exports. It also says one Iranian official linked the change in tactics to an effort to influence the outcome of the November midterm elections in the United States. Those claims could not be independently verified in the supplied material, but they point to the wider political stakes surrounding the maritime campaign.

What remains unclear is how long the new surveillance posture will last, whether the attacks will continue at the same pace, and how shipping companies will adjust their routes and procedures. It is also not clear whether the reported damage to the tanker was part of a broader pattern or an isolated incident. For now, the key issue is whether the latest Iranian deployment will deter further attacks or deepen the risk to traffic through one of the world's most sensitive energy corridors.