Strait of Hormuz Connects Global Supply Chains

The Strait of Hormuz has seen 90 to 95% of oil tanker and cargo ship traffic grind to a halt since Operation Epic Fury began.

An estimated 20% of the world’s crude oil supply normally passes through the strait. Shipping companies are unwilling to move vessels through the strait while Iran threatens to attack them and set vessels on fire, and insurance companies will not protect the vessels if they do attempt the journey.

Global supply chain disruptions in the near-term as well as in future months will be felt around the world.

Video Spotlight:  

• Strait of Hormuz shipping grinds to halt, rocking global energy market (Mar 4, 2026, CBS News)
• No indication of movement towards reopening Strait of Hormuz, says RBC’s Helima Croft (Mar 6, 2026, CNBC Television)

This post is based on the NBC News article, How US-Iran Conflict is Reshaping Global Supply Chains, by Libby Hargreaves, March 2, 2026, and the YouTube videos in the Spotlight. Image source: Grassetto/iStock/Getty Images

Discussion Questions:

1. What short-term supply chain impacts are being seen from the disruption in the Strait of Hormuz?

Guidance: Less than a week into the conflict, an estimated 150 to 200 vessels have either anchored in open waters or been rerouted, often around the Cape of Good Hope. This diversion is 3,500 nautical miles longer and a million dollars more expensive than passing through the strait.

Usually, 200 million barrels of oil travel through the strait per day. These have been all but choked off, with an immediate effect on short-term gasoline prices.

The impact of the stoppage is even greater in Asian countries than in the United States. 80% of the strait’s crude oil and liquid natural gas (LNG) shipments go to Asian nations, including the four largest buyers: China, India, Japan, and South Korea. While China is said to have a massive 1.2 billion barrels of crude oil in inventory to cushion the immediate impact of this situation, about half of its oil shipments normally travel through the Strait of Hormuz.

Meanwhile, Iran is also not receiving its usual revenues for gas and oil transactions.

In addition to oil and LNG, other commodities including aluminum, fertilizer, and sugar also normally pass through this route. In the short term, purchaser of these commodities may face shipping delays or higher prices if the vessels are forced to travel longer and more expensive shipping routes.

As a side note, the military conflict has led to a shutdown of 18% of air cargo shipments. Companies like FedEx, Qatar Airways, and the Cathay Group have halted operations in some affected areas.

Stoppages impact those who normally use this shipping mode, as well as those seeking alternate logistics options due to the stoppage of sea traffic.

Pharmaceutical ingredients normally ship from India through the strait have see alternate air freight costs increase fourfold in the first two days of the conflict due to the lack of capacity to fly out these important commodities to various purchasers around the world. Drug manufacturers could potentially face inventory shortages as a result.

Other sectors such as technology are being affected because shipments of EV batteries and semiconductors are caught in this shipping stoppage. Also, countries in the Middle East import about 85% of their food supplies, which are now not moving through the strait in a timely way.

Finally, if the strait is not soon able to open for normal operations, producers of oil in the region may have to halt production. Some countries have already begun to decrease their output. Storage capacity is limited, and without empty vessels returning to pick up new shipments, there is limited space to store recently pumped oil.

2. What are the longer-term implications of the halt of sea traffic, and how might this be affected by the length of the disruption?

Guidance: Longer term issues involve the impact on energy prices, elevated prices throughout the supply chain due to increased fuel and transportation costs, and higher prices for the consumer.

Overall inflation, driven by rising energy costs, could cause consumers to pull back their spending and potentially result in stagflation, the combination of slow growth and higher inflation.

The market for fertilizer has already seen large price increases as well as shortages since Russia’s invasion of the Ukraine three years ago. Further shortages could exacerbate problems for farmers, increasing their costs or reducing yields if they are unable to obtain or afford fertilizer for crops. Spring planting is just around the corner in the Northern Hemisphere, and depending on the length of the conflict, longer-term shortages could affect plantings later in the year in the Southern Hemisphere.