Ahead of US polls, Iran shifts Hormuz attack tactics, report says

Iran reportedly began using different offensive tactics against ships it considered in violation of its restrictions. The change affected both the kind and speed of attacks. Iranian officials said the strategy aimed to keep global oil prices high and influence the US midterm elections.

A US military official identified one important change. After the United States destroyed much of Iran’s radar capability, the Islamic Revolutionary Guard Corps reportedly used unarmed spotters in small boats. These spotters looked for possible targets, including US naval vessels. The article does not describe the other new tactics.

The shift followed a decision made at Iran’s highest leadership levels, according to the officials. One official said the new methods began about 10 days earlier and were followed by more attacks. Independent data showed attacks on commercial ships had reached their highest level since the war began, increasing pressure on shipping and oil markets.

The Strait of Hormuz is a narrow sea passage between Iran and Oman. It connects the Persian Gulf with the Gulf of Oman, which opens into the Arabian Sea and the Indian Ocean. Ships use it to move between Gulf ports and global markets.

Its geography makes it strategically important. Large volumes of oil, gas, and other cargo travel through the strait because many producing countries sit inside the Persian Gulf. Tankers leaving those ports generally need this passage unless supplies use pipelines or ships take much longer routes.

The source describes ships sailing through the strait and links attacks there with global oil prices. It does not provide geographic measurements or traffic totals. Because alternatives have limited capacity and may cost more, danger in the waterway can affect energy markets far beyond the region.

About 20% of the world’s petroleum liquids normally pass through the Strait of Hormuz, according to widely used energy estimates. The exact share varies by year and by whether the measure includes crude oil, refined products, or all petroleum liquids. The supplied article does not state this figure.

The volume is large because major oil exporters sit inside the Persian Gulf. Their tankers use the strait to reach customers in Asia, Europe, and elsewhere. Even countries that do not import directly from the Gulf can feel effects through global prices and shipping markets.

A disruption would not necessarily stop every barrel. Some oil can move through pipelines or alternative routes, but those options have limited capacity. The article’s reported increase in attacks matters because even threats can make buyers, traders, and ship operators reassess supply risks and costs.

Iran’s Islamic Revolutionary Guard Corps, or IRGC, is a major military and security force created to protect Iran’s Islamic Republic. It operates alongside, but separately from, Iran’s regular armed forces. The source specifically links the IRGC to maritime surveillance after Iran’s radar systems were damaged.

According to a US military official, the IRGC began using unarmed spotters in small boats. These personnel identified possible targets, including US naval vessels. The reported method substituted human observation for some radar coverage. The article does not say that every attack was carried out by these spotters.

The change matters because it can make detection harder after radar losses. Iranian officials said the broader strategy had been approved at the highest leadership levels. Independent data showed that attacks on commercial ships had recently surged to their highest level since the war began.

When vessels face greater danger in a chokepoint, shipowners may avoid the route, demand higher insurance, or pay for extra security. Some ships may slow down, wait, or take longer alternatives. Those decisions reduce efficiency and raise the cost of delivering oil and other goods.

The first effect may be on shipping costs rather than physical supply. A tanker taking a longer route uses more fuel and time. Insurance companies may also charge more for war-risk coverage. Buyers then face higher delivered costs, and some may compete for cargoes that appear safer or more reliable.

Global oil prices can rise when traders expect disruption. The article says Iran aims to frustrate efforts to lower global oil prices, and it reports increased attacks. If supplies were actually blocked, prices could rise further, although the size would depend on stored inventories, spare production, pipelines, and alternative routes.

If Hormuz became difficult to use, some Gulf oil could move through pipelines to ports outside the strait. Saudi Arabia’s East-West pipeline can reach the Red Sea, while the United Arab Emirates has a pipeline to Fujairah on the Gulf of Oman. These routes cannot carry all normal seaborne volumes.

Tankers could also travel around the Arabian Peninsula and Africa’s Cape of Good Hope. That avoids the strait but adds distance, fuel use, crew time, and shipping costs. Countries could release emergency stocks, reduce consumption, or switch some electricity generation and transport demand to other fuels.

Longer-term alternatives include natural gas, renewable electricity, nuclear power, efficiency measures, and electric vehicles. Their usefulness depends on infrastructure and how quickly demand can change. The article does not discuss alternatives, so these options provide broader context rather than reported developments in this episode.

Global oil prices are shaped by the balance between expected supply and expected demand. Traders compare available production, inventories, refinery needs, transport costs, and economic conditions. Prices are also influenced by futures contracts, where buyers and sellers trade barrels for later delivery and signal what they expect.

A feared disruption can therefore change prices before supplies run out. If traders think attacks could block tankers, they may buy oil or contracts sooner. That extra demand raises prices. Shipowners may also charge more, and refiners may compete for cargoes from safer routes. These costs can enter market prices quickly.

The size and duration of the increase depend on what happens next. High inventories, spare production, alternative pipelines, or reduced demand can limit the effect. The article reports that Iran wants to frustrate efforts to lower global oil prices, making expectations central to its reported strategy.