A man walks along the shore as oil tankers and cargo ships line up in the Strait of Hormuz, seen from Khor Fakkan, United Arab Emirates, Wednesday, March 11, 2026.

Iran, the Strait of Hormuz, and an Unprecedented Energy Crunch

Escalating Conflict in the Persian Gulf

First, a U.S. -Israel attack in Iran triggered regional escalation, promoting Iranian retaliation against U.S. bases and threats toward ships traveling through the Strait of Hormuz.

Consequently, the conflict placed one of the world’s most important energy chokepoints at the center of global economic risk.

Strategic Importance of the Strait

The Strait of Hormuz connects the Persian Gulf to global markets and measures only about twenty-one miles wide at its narrowest point.  

Moreover, roughly one-fifth of global crude oil and large volumes of liquefied natural gas pass through the waterway.  

Therefore, any disruption in this corridor immediately threatens global energy supply chains and international shipping routes. 

Military Escalation and Maritime Disruptions

Following the strikes, Iran warned ships against crossing the strait and reportedly targeted several vessels in the area.  

As a result, ship traffic through the strait sharply declined, demonstrating how quickly conflict can disrupt global trade flows.  

Meanwhile, the United States targeted Iranian naval assets, attempting to prevent a full blockade of the waterway.

Immediate Energy Market Shock

Subsequently, energy markets reacted quickly to the instability in the region.  

Brent crude oil prices rose sharply, while U.S. oil benchmarks and natural gas prices also surged amid fears of supply disruption.  

Additionally, attacks on regional energy facilities and halted production intensified concerns about prolonged shortages.

Global Consequences of a Prolonged Disruption

If disruptions persist, global energy markets could experience severe shortages and price volatility.  

Even increased production from other energy exporters would likely be insufficient to fully replace the lost Gulf supplies.

Countries Most Exposed to the Shock

In particular, Asian economies depend heavily on energy shipments through the strait.  

China, India, Japan, and South Korea receive the majority of these shipments and would face the most immediate economic pressure.  

Consequently, disruptions could raise energy costs, strain supply chains, and slow economic growth across major importing nations. 

Limits to a Complete Closure

Although Iran has threatened to close the strait, maintaining a long-term blockade would be difficult.  

Nevertheless, smaller actions such as mining routes, drone attacks, or harassment of vessels could still severely disrupt energy shipments. 

Broader Geopolitical Implications

Ultimately, tensions in the Persian Gulf highlight how geopolitical conflict can rapidly trigger a global energy crisis.  

Thus, the stability of the Strait of Hormuz remains central to global economic security and the functioning of international energy markets.

Source:

Council on Foreign Relations. (2026). Iran, the Strait of Hormuz, and an unprecedented energy crunch. https://www.cfr.org/articles/iran-the-strait-of-hormuz-and-an-unprecedented-energy-crunch