MANAMA, July 8 — The Strait of Hormuz remains the world’s most critical oil transit chokepoint, a narrow waterway through which about 20% of all global petroleum consumption flows each day. For communities across Asia, from the refineries of South Korea to the petrol stations of the Philippines, this channel between Oman and Iran is the artery that keeps economies moving and households supplied.
According to the U.S. Energy Information Administration, an estimated 17 million barrels per day of crude oil, condensate, and petroleum products moved through the strait in 2022. That volume represents the lifeblood of energy markets in East Asia, South Asia, and Southeast Asia, where countries like Japan, India, China, and the Philippines depend heavily on Persian Gulf crude.
The strait’s shipping lanes are just three kilometres wide in each direction, leaving little room for error or confrontation. The waterway connects the Persian Gulf to the Gulf of Oman and the Arabian Sea. Countries that rely on it for their oil exports include Saudi Arabia, Iraq, Kuwait, the United Arab Emirates, Qatar, and Iran itself.
Any disruption here does not stay local — it travels directly to the pockets of families across the region who pay for transport, electricity, and goods moved by fuel.
A history written in tanker attacks
Tensions in the Strait of Hormuz are not new. During the Iran–Iraq War from 1980 to 1988, both sides attacked oil tankers in what became known as the Tanker War, a campaign that threatened global shipping and drew in outside navies to protect the flow of oil. That period set a pattern of confrontation that has resurfaced repeatedly.
In 2019, a series of attacks on tankers near the strait escalated U.S.–Iran tensions dramatically. The situation intensified further in June of that year when Iran shot down a U.S. RQ-4A Global Hawk drone, a high-altitude surveillance aircraft.
The incident brought the two countries to the brink of direct military engagement and sent shockwaves through energy markets. The strategic importance of the strait was underscored again in 2020, when the United States killed Iranian General Qasem Soleimani. His death prompted widespread fears of Iranian retaliation against commercial shipping in the waterway, though a full blockade never materialised.
Iran has periodically threatened to close the strait in response to sanctions or military pressure, but it has never fully done so.
What a closure would mean for Asia
The EIA has warned that any disruption in the Strait of Hormuz could lead to significant oil price spikes and supply shortages globally. For Asia, which imports the majority of its crude oil from the Persian Gulf, the consequences would be immediate and severe. Refineries in countries like South Korea, Japan, and India would face supply gaps, while the Philippines and other Southeast Asian nations would contend with soaring fuel costs that affect everything from public transport to food prices.
Closer to home, the impact would be felt in the cost of shipping goods between Asian ports, in the price of cooking gas for households, and in the budgets of families already stretched by inflation. The strait is not an abstract geopolitical concept for the region — it is a concrete factor in daily economic life.
The waterway, at its narrowest point 33 kilometres wide, forces the world’s largest oil tankers into tight corridors. The shipping lanes themselves are only three kilometres wide in each direction, meaning a single incident — whether a military strike, a mine, or a collision — could effectively shut down the channel for days or weeks. Iran’s position as both a guardian and a potential disruptor of the strait gives it outsized influence over global energy security.
The country has used this leverage repeatedly, most recently in the 2019 tanker attacks and the drone downing, to signal its ability to retaliate against economic pressure. The United States and its allies have maintained a naval presence in the region for decades specifically to keep the strait open.
For the current U.S. administration under President Donald Trump, the strait remains a flashpoint where the risk of escalation is ever-present. The killing of Soleimani in 2020 demonstrated that the United States is willing to take direct action against Iranian figures, but it also showed how quickly such actions can raise the temperature across the entire Gulf region.
What to watch next
As of July 2026, the Strait of Hormuz remains open, but the underlying tensions that have made it a site of confrontation for decades have not eased. Iran continues to face international sanctions, and its leadership has not abandoned the threat of closing the strait as a bargaining chip. The U.S. military presence in the Gulf, along with patrols by allied navies, provides a layer of deterrence, but the narrow geography of the waterway means that even a small incident could have outsized consequences.
For communities across Asia, the question is not whether the strait matters — it is when the next crisis will come, and how prepared the region’s economies are to absorb the shock. The EIA’s warning about price spikes and supply shortages is not theoretical; it is a reminder that the energy security of millions of households rests on the stability of a 33-kilometre stretch of water halfway around the world.
Sources
- Iran war: What is the Strait of Hormuz and why does it matter?
- Hormuz Chokepoint: Saudi Oil Flows Across the Desert After Blockade
