The Strait of Hormuz: How One Chokepoint Can Break the Global Supply Chain

2 days ago
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The World’s Most Important Bottleneck

Every supply chain has a bottleneck.

Usually, it is a factory, a port, or a delayed shipment. In the global economy, one of the most critical bottlenecks is something much smaller. It is a narrow stretch of water.

The Strait of Hormuz is only about 35 to 60 miles wide. It connects the Persian Gulf to the Gulf of Oman and the Arabian Sea. Despite its size, it carries about 20% of the world’s oil and liquefied natural gas exports. Every day, between 80 and 130 ships pass through it. Nearly 30,000 tankers per year depend on this route, many carrying over a million barrels of oil.

This is not just geography. It is a critical node in the global supply chain.

Figure 1. Key oil shipping routes, the Strait of Hormuz is the largest chokepoint. Source: The Economist — Figure 1. Key oil shipping routes, the Strait of Hormuz is the largest chokepoint. Source: *The Economist*

A System Built on a Single Point of Failure

The Strait is the main export route for petroleum from:

Iran
Iraq
Kuwait
Qatar
United Arab Emirates

The UAE has a limited alternative route through Fujairah, but most exports have no real substitute path.

Even more important is where this energy goes. About four-fifths of oil and gas moving through the Strait goes to Asia, including China, India, Japan, and South Korea.

From an operations perspective, this creates a clear risk:

High throughput with low redundancy leads to vulnerability.

Figure 2. Oil Price, dollars per barrel. Key spike from August 2025. Source: U.S. Energy Information Administration — Figure 2. Oil Price, dollars per barrel. Key spike from August 2025. Source: *U.S. Energy Information Administration*

When the System Breaks

This risk became real during the 2026 Iran conflict.

Traffic through the Strait dropped by as much as 95%. This was one of the largest disruptions in global oil supply in modern history.

The effects were immediate:

Oil prices surged
Natural gas prices increased
Fertilizer costs rose
Industrial metals like aluminum became more expensive

What started as a regional disruption quickly turned into a global supply chain shock.

Why Energy Disruptions Spread Everywhere

Energy is not just another product. It is a core input for almost every industry.

When oil supply is disrupted:

Transportation costs rise
Manufacturing becomes more expensive
Agriculture is affected through fuel and fertilizer
Industrial supply chains become unstable

Even industries like technology and construction feel the impact through higher material costs.

This is an example of network interdependence. A problem in one part of the system spreads through the entire network.

The Bullwhip Effect at a Global Scale

The disruption did not only affect supply. It also changed behavior.

As uncertainty increased:

Firms ordered more inventory than usual
Markets reacted with speculation
Prices became more volatile

This is known as the bullwhip effect. Small disruptions at the source lead to large fluctuations across the system.

In this case, a disruption in one narrow passage affected markets around the world.

Figure 3. Small Customer demand causes large fluctuations in supplier production. Source: Research Gate — Figure 3. Small Customer demand causes large fluctuations in supplier production. Source: *Research Gate*

Where Supply Chains Meet Geopolitics

The Strait of Hormuz is governed by international maritime law under the United Nations Convention on the Law of the Sea.

In practice, control depends on power. Iran’s location and naval strength give it influence over the Strait, especially during conflict.

This shows an important reality:

Supply chains are shaped by politics as much as by economics.

Figure 4. The extent of Iran's military control over the Strait. Source: Alma Research and Education Center — Figure 4. The extent of Iran's military control over the Strait. Source: *Alma Research and Education Center*

The Tradeoff Between Efficiency and Resilience

Modern supply chains are built for efficiency. They prioritize speed, cost, and scale.

But efficiency creates risk.

When too much depends on a single route, that route becomes a point of failure. The 2026 disruption showed how quickly that failure can:

stop global flows
increase prices
disrupt industries

Conclusion

The most important risks in a supply chain are often the smallest ones.

The Strait of Hormuz is only a few dozen miles wide. Yet it has the power to affect the entire global economy.

As supply chains become more connected, this kind of risk becomes more important.

The real question is not whether disruptions will happen. It is whether the system is strong enough to handle them.

Sources:

U.S. Energy Information Administration. World Oil Transit Chokepoints. https://www.eia.gov/todayinenergy/detail.php?id=65504
U.S. Energy Information Administration. Petroleum & Other Liquids Data. https://www.eia.gov/dnav/pet/hist/RWTCD.htm
The Economist. Map of Global Oil Shipping Routes.
ResearchGate. Bullwhip Effect Diagram.
Alma Research and Education Center. Strait of Hormuz Strategic Map.