• Iran is widening its targeting of commercial shipping beyond the Strait of Hormuz, aiming to keep oil prices elevated before the November 3 U.S. midterm elections, according to two senior Iranian officials.
  • Maritime incidents have surged, with at least five reported in 48 hours, including drone strikes; the U.S. Navy-led Joint Maritime Information Center rates the threat as "severe."
  • Oil prices remain elevated, with Brent at $106.32 and WTI at $94.80, as the disruption threatens a waterway that normally carries 20% of global oil and LNG supplies.

Iran has shifted its tactics to intensify attacks on ships in the Strait of Hormuz, seeking to keep global oil prices high ahead of the November 3 U.S. midterm elections, according to two senior Iranian officials interviewed by Reuters (TRI). The escalation, which began roughly 10 days ago, involves both the type and pace of attacks, the officials said, and operations are expanding beyond Hormuz into the Gulf of Oman and other waters. The move is a calculated effort to frustrate U.S. and allied efforts to lower energy prices, they added, turning oil into political leverage.

The maritime-security situation is deteriorating rapidly. In the 48 hours preceding October 14, Reuters counted at least five incidents involving commercial vessels around Hormuz, including drone strikes. On Tuesday, the UK Maritime Trade Operations (UKMTO) reported that a container ship and a tanker had been struck by unidentified projectiles. The U.S. Navy-led Joint Maritime Information Center classified the shipping threat as "severe," its second-highest level, underscoring the risk to vessels and crews.

Iran has adapted its tactics after losing much of its radar capability, a U.S. military official told Reuters. Unarmed spotters in small boats are now being used to identify targets for the Islamic Revolutionary Guard Corps. Last week, U.S. forces destroyed one such vessel after ordering its occupants to leave; no casualties were reported. The incident highlights how commercial-shipping protection and military confrontation can overlap, raising the risk of direct U.S.-Iran encounters.

Oil prices remain elevated as a result. At 03:45 GMT on October 14, Brent crude was reported at $106.32 a barrel, up 0.6%, and U.S. West Texas Intermediate at $94.80, up 0.7%. These are timestamped observations, but they reflect the market's anxiety over a waterway that normally carries about one-fifth of global oil supplies and LNG trade. Before the war, the strait was a critical artery for energy flows, particularly to Asia, which in 2024 received 84% of the crude oil and condensate and 83% of the LNG moving through Hormuz.

Economic Ripple Effects

The disruption is already spreading through the global economy. Higher energy costs feed into transport, food, and other prices, reducing purchasing power and complicating efforts to bring inflation down. Shipping and insurance costs have also risen, making it harder to restore normal traffic even when vessels can physically pass. Gulf exporters are feeling the pinch: higher oil prices do not automatically translate into stronger economies if producers cannot reliably ship their output. October reporting on IMF forecasts describes sharp growth downgrades for Gulf economies linked to prolonged disruption.

The IMF's latest outlook, released October 13, projects global growth of 3.1% in 2026 and headline inflation of 4.7%. Its anticipated recovery depends partly on restoring Hormuz operations, illustrating how a regional maritime conflict has become a global economic constraint. Industry executives told Reuters that accessible inventories have been depleted by efforts to cushion supply disruptions, leaving less protection against another interruption. "What we are really focused on is regulatory stability," one executive said, speaking on condition of anonymity. "Italy in this regard has been on a very steady growth trajectory." The quote, while from a different context, underscores the broader demand for predictability that is now missing in the Gulf.

Political Calculations

Iran's reported strategy is to turn energy prices into political leverage ahead of the U.S. elections, which will determine control of Congress. The war's approximately $3 billion monthly cost has become a campaign issue, according to Reuters. President Donald Trump has stated he will not attack again before the vote, while weighing subsequent steps. On October 13, Trump also accused Yemen's Houthis of deliberately raising oil prices before the election—a separate allegation that adds to the tense backdrop.

The principal policy measures described in current reporting include Iranian restrictions on passage, enforced through threats, attacks, and harassment; a U.S. naval blockade of Iranian ports and expanded sanctions intended to pressure Tehran into an agreement; and the U.S. president's stated position on military action. The geographic expansion increases the risk to neighboring Gulf states and international merchant fleets. It also creates more opportunities for direct U.S.-Iran encounters, as demonstrated by the destruction of the spotting vessel.

A Wary Normalization

This is not the first time shipping has been used as a tool of statecraft. The closest historical precedent is the 1980s "Tanker War," when Iran and Iraq attacked energy infrastructure and merchant shipping, and Iranian forces laid mines in the Gulf. The United States escorted reflagged Kuwaiti tankers during Operation Earnest Will in 1987–1988. The parallel is the use of shipping disruption to internationalize a regional conflict and draw outside naval powers into protecting trade.

Today, the risks are compounded by other developments. Houthi attacks on Saudi Arabia continue, with an attack on a Saudi Aramco (2222.SR) administrative building in Dhahran causing a limited fire, according to the kingdom's energy ministry. Houthi attacks on commercial shipping in the Red Sea and Bab al-Mandab threaten another strategic route, broadening the conflict's effect on trade. Supply offsets are limited: Saudi Arabia increased oil production in September despite shipment disruption, and the prospect of additional Russian diesel exports offers some relief to fuel-market tightness. But neither removes the physical security problem in Hormuz.

What to Watch

The main risk is further interruption of shipping rather than a guaranteed, sustained rise in oil prices. Wider targeting could increase costs and discourage sailings; conversely, continued exports and additional fuel supplies could limit price gains. Nissan Securities Investment (8705.T) strategist Hiroyuki Kikukawa projected WTI trading between $90 and $100 a barrel, citing competing regional supply risks and potential Russian diesel relief. That is one analyst's conditional assessment, not a consensus forecast.

Normalization may take longer than a ceasefire announcement: shipping, insurance, production, and payment arrangements all need to recover. October reporting on the IMF outlook says its baseline assumes Hormuz reopening by March 2027 and a broader return to pre-war conditions by October 2027. Those dates are forecasting assumptions—not an agreed reopening timetable—and continued escalation could invalidate them.

The decisive indicators are actual export volumes, vessel transit rates, independently documented attacks, and insurance conditions. Official threats matter, but they should not be mistaken for proof that a complete closure has occurred or that the intended electoral effect will follow. For now, the Strait of Hormuz remains open, but the risk of disruption is higher than at any point since the war began.

Correction: An earlier version of this article misstated the percentage of global LNG trade that crosses the Strait of Hormuz. It is approximately one-fifth, not 20% of all natural gas. The error has been corrected.