What Is the Strait of Hormuz and Why Does It Matter?
What does a narrow waterway in the Middle East have to do with your gas prices and grocery bill? More than you'd think.
Update (Oct. 14, 2026): Ships are still moving through the Strait of Hormuz, but recent attacks on commercial vessels have made passage dangerous. The U.S. Energy Information Administration expects oil flows and prices to remain volatile. This is a fast-moving story; check a current news source before teaching.
Have you checked gas prices lately? Maybe you've noticed prices at the pump swinging wildly this year, or heard a parent grumbling about it at the grocery store. There's a reason for that, and it starts with a narrow strip of water on the other side of the planet.
A conflict involving the U.S., Israel and Iran is reshaping the Middle East and sending shockwaves through the global economy, and a lot of it comes down to one geographic bottleneck: the Strait of Hormuz. Watch the short BBC explainer below to get oriented, and pay close attention to the two choke points mentioned and what happens when either one gets disrupted.
The Breakdown: How One Narrow Waterway Affects Gas Prices and Your Grocery Bill
The U.S.-Israel conflict with Iran sent oil prices sharply higher as shipping companies grew nervous about sending tankers through the Strait of Hormuz, putting pressure on gas prices and food costs around the world. When a ceasefire was announced in mid-June 2026, oil prices fell. Shipping traffic increased after a June 18 agreement to reopen the strait, but renewed strikes in July pushed prices up again.
The strait's grip on global markets runs deeper than most people realize.
Here's something that surprises most people: The U.S. is the world's largest oil producer and a net exporter of petroleum. So why do American consumers still get hit when prices spike overseas? Oil trades in a global market, and prices for different kinds of crude generally move together, though they aren't identical. Writing in the New York Times, policy analyst Rosemary Kelanic described it this way: Think of the oil market as a giant bathtub.
If less oil flows into the tub, prices can rise for everyone drawing from it, even if their country produces plenty of oil.
The strait also carries fertilizer. According to the International Fertilizer Association, nearly 18.5 million metric tons of urea traveled through it in 2024. Urea is a fertilizer; ammonia is used to make fertilizer, and disruptions in the region can affect its supply, too. If fertilizer gets more expensive, farmers' costs can rise and eventually put pressure on food prices.
Iran has also threatened to leverage a second chokepoint, the Bab-el-Mandeb Strait near Yemen. Ships heading through it toward the Suez Canal can instead sail around Africa's Cape of Good Hope, but the trip takes longer and costs more.
Key Terms/Cheat Sheet
- Strait of Hormuz: A narrow waterway between Iran and Oman connecting the Persian Gulf to the Indian Ocean. About 20 percent of the world's oil passes through it daily. (Quick spelling note: it's "strait," not "straight." A strait is a narrow body of water, not a direction. Though given what's at stake here, "straight-up important" works too.)
- Choke point: A narrow, strategic route that, if blocked, can disrupt global trade. Few alternatives means significant leverage for whoever controls it.
- Bab-el-Mandeb: A second strategic chokepoint near Yemen connecting the Red Sea to the Gulf of Aden. Ships avoiding it must reroute around the southern tip of Africa, a longer and more expensive journey. During the war, Iran threatened to leverage its Houthi allies to close it.
- Urea and Ammonia: The primary ingredients in nitrogen fertilizer. According to the American Farm Bureau Federation, nearly 50 percent of global urea exports and about 30 percent of global ammonia exports pass through the Strait of Hormuz. Less of either means more expensive fertilizer, which means higher food prices.
- Global oil market: Oil is bought and sold worldwide at a single market price. Even major producers like the U.S. feel the impact when supply is disrupted anywhere.
- Oil intensity: How much oil a country uses relative to the size of its economy. The U.S. is more than 40 percent more oil-intensive than China, making it especially vulnerable to price shocks.
- Strategic Petroleum Reserve: An emergency oil stockpile held by the U.S. government that can be released to stabilize markets during a crisis. It was drawn down significantly during the 2026 conflict as part of a coordinated international release."
Discussion Questions
Personal Connection: Before this lesson, did you ever think about what factors influence gas prices or the cost of groceries? What surprised you most?
Geography and Power: Why would a 39-kilometer-wide waterway have this much influence over the global economy? What does that tell us about how interconnected the world is?
Multiple Perspectives: The U.S. is the world's largest oil producer, yet American consumers still feel price spikes from halfway around the world. Who benefits from the current global oil system, and who is most vulnerable to it?
Equity and Food Security: If urea shipments slow down and fertilizer gets more expensive, which communities or countries would likely feel it most? Why?
Big Picture: Some experts say the long-term fix is reducing U.S. dependence on oil through electric vehicles and clean energy. Others say that's not realistic in the short term. What trade-offs do you see in each approach?
Media Literacy Challenge 🔍
- Who is speaking? The BBC video is a public broadcaster. The New York Times piece is an opinion essay by a policy expert. How might the source or format shape what gets emphasized?
- Compare the coverage. Search "Strait of Hormuz" on one U.S. news outlet and one international outlet. What details does each include? What's missing?
- Follow the data. The video says oil prices "have gone up." Find a chart showing current oil price trends. What does the data actually show, and over what time period?
- Spot the opinion. The New York Times piece is labeled an opinion essay. What's the author's main argument? What evidence supports it? What questions would you want answered before forming your own view?
Extension Activity: Local Gas Price Tracker
- Set a baseline. Record today's average gas price in your area using GasBuddy or a local station. Note the national average for comparison.
- Track weekly. Check and record prices each week. Build a simple line graph over time.
- Connect to the news. Each week, note one headline about the Strait of Hormuz or oil markets. Does the news seem to move local prices? How quickly?
- Reflect. What did you learn about how global events affect everyday life? What surprised you?
Optional upgrade: Compare gas prices across different ZIP codes in your region. Are prices higher in some neighborhoods? What might explain that?
Lesson Plans on Global Politics
Find more resources on global politics and how they relate to your students with our free collection of preK-12 lesson plans and teaching resources.
Andy Kratochvil is a proud member of the AFT Share My Lesson team, where he’s passionate about discovering and sharing top-tier content with educators across the country. He earned his bachelor’s degree in political science and French from California State University, Fullerton, and later completed... See More
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