In the fourth week of the 2026 US-Israel war against Iran, the Strait of Hormuz has emerged as one of Tehran’s most potent asymmetric weapons. By effectively closing or severely restricting pᴀssage through this narrow chokepoint, Iran is threatening to disrupt approximately 20% of the world’s daily oil supply and a significant portion of global liquefied natural gas (LNG) trade.
The strait, located between Iran and Oman, connects the Persian Gulf to the Gulf of Oman and the Arabian Sea. Before the conflict escalated on February 28, it handled roughly 21 million barrels of oil per day, along with large volumes of LNG from Qatar and other Gulf producers. Since early March, Iranian forces — primarily the Islamic Revolutionary Guard Corps (IRGC) — have declared the waterway “closed” to hostile vessels, launching attacks on commercial ships, laying mines, and deploying drones and anti-ship missiles.
From Full Threat to Partial Control.

Following the initial US and Israeli airstrikes under Operation Epic Fury, Iran responded with a multi-layered strategy. It began attacking tankers and commercial vessels, with reports of over 20 incidents, including fires and damage to ships. Traffic through the strait dropped to a near-standstill, with only a handful of approved vessels pᴀssing under strict Iranian conditions.
Iran has allowed limited safe pᴀssage for ships from “non-hostile” countries, but tankers linked to the US, Israel, or their close allies face immediate threats. This selective approach has created mᴀssive uncertainty for shipping companies. War risk insurance premiums have soared, and many operators have rerouted vessels or halted operations entirely.
On March 22, President Donald Trump issued a sharp 48-hour ultimatum: Iran must fully open the Strait of Hormuz without threats, or the US would “obliterate” Iranian power plants, starting with the largest ones. Iran’s response was defiant. The IRGC warned that any attack on its energy infrastructure would trigger a complete and indefinite closure of the strait, along with retaliatory strikes on energy and desalination plants across the Gulf region.

Trump later extended the ᴅᴇᴀᴅline by five days, citing “very good and productive conversations” with Iranian channels, but the tension remains high.
Economic Shockwaves Worldwide
The disruption has already sent oil prices surging. Brent crude climbed past $110–$120 per barrel in volatile trading, while some analysts warned that a prolonged full closure could push prices toward $150–$200 in extreme scenarios. The International Energy Agency and market observers noted that even partial restrictions have forced Gulf producers to cut output as storage tanks filled up.
The impact extends far beyond energy:

Asia, which receives about 75–80% of its oil imports through the strait, faces potential shortages and higher costs for fuel, transportation, and manufacturing.
European natural gas prices have also spiked due to reduced LNG flows from Qatar.
Global supply chains for food, medicine, and consumer goods are under pressure as shipping costs rise dramatically.

For countries like Vietnam, India, China, Japan, and South Korea — heavy importers of Middle Eastern crude — the ripple effects include higher gasoline and electricity prices, increased inflation, and potential slowdowns in industrial activity.
Strategic Calculations on Both Sides
Iran views the strait as its ultimate leverage. By weaponizing this geographic chokepoint, Tehran aims to raise the economic and political cost of the war for the US and its allies, hoping to force negotiations on more favorable terms. Iranian officials have stated they will not allow “a single litre of oil” to pᴀss if attacked further.
The US and Israel, meanwhile, have conducted strikes on Iranian anti-ship missile sites along the coast. Washington has signaled readiness to escort tankers with naval forces if needed, echoing the “Tanker War” of the 1980s. However, a full military effort to reopen the strait could take weeks or months and risks further escalation, including Iranian attacks on Gulf energy infrastructure.
Gulf Arab states find themselves in a difficult position. While some quietly support efforts to contain Iran, they also fear becoming collateral damage if Iran follows through on threats to target regional power and desalination plants.

Uncertain Outlook
As of late March 2026, the situation remains fluid. Diplomatic efforts through intermediaries like Pakistan continue, but deep mistrust persists. Trump has alternated between tough rhetoric and optimistic statements about potential deals, while Iran insists on guarantees against future aggression and compensation for damages.
A prolonged closure would test global emergency oil reserves and could trigger demand destruction in consuming nations. Even a partial reopening under threat would keep insurance costs high and deter full recovery of shipping volumes.
The Strait of Hormuz crisis underscores how a narrow 21-mile-wide waterway can hold the global economy hostage. Whether it becomes the catalyst for a ceasefire or leads to even more destructive escalation will depend on the coming days of military posturing and back-channel diplomacy.
For now, the world’s energy markets — and millions of consumers — are paying the price of this high-stakes confrontation.