Oil prices and natural gas prices spiked this week because of fresh concerns about trouble in the Middle East. For most of 2025, the market had priced in this risk and then largely moved on. This week, traders started worrying again.

The Strait of Hormuz is a narrow passage between Iran and Oman. Every single day, about 20 million barrels of oil travel through it. That is roughly one-third of all oil that moves by sea globally. According to a Congressional Research Service report published in March 2026, that number is down slightly from a few years ago, but not because the world used less oil. The EIA noted in June 2025 that Saudi Arabia and other OPEC+ members deliberately cut their own production to keep prices up. That explains some of the decline. The core point: almost everything that moves through Hormuz has no realistic alternative route. There is no backup. The strait is the single point where everything could get stuck.

China's Problem

China depends on Hormuz more than any other major economy. In 2025, about half of China's imported crude oil came from the Middle East, and nearly one-third of its liquefied natural gas (LNG—natural gas that is cooled and shipped by boat) came from the same region. These are not small numbers. They are critical.

If the strait closed or faced a serious blockade, Chinese oil refiners would all rush to buy oil from somewhere else—West Africa, the North Sea, South America. Prices would jump immediately. Shipping costs for oil tankers would shoot up. The money refineries make from processing oil into gasoline and diesel would change overnight.

This is why this week's price moves matter. Traders are not simply reacting to news headlines. They are working through scenarios based on actual physical facts: 20 million barrels move through one waterway every day, and that region is unstable. When that happens, traders adjust their bets on oil prices, future prices, and insurance costs (called options). They have to. The physical reality forces it.

Gas Prices Move Too

Natural gas prices in Europe also jumped, according to AP News reporting from March 2026. Here is why: most of the liquefied natural gas sold to Europe comes from Qatar and other Gulf countries. It travels through the Strait of Hormuz. Any threat to that passage pushes up European gas prices immediately.

Europe learned this lesson the hard way in 2022 when Russia cut off gas supplies. European countries scrambled to buy LNG anywhere they could, and prices went through the roof. Now they are extra careful about anything that could block LNG supplies. A threat to Hormuz triggers that worry instantly.

This also shows how Middle East problems ripple across multiple energy markets at once. A decade ago, oil and gas markets reacted separately. Now they move together because the same countries (China, India, Japan) buy both, and they all run through the same chokepoint.

The Hidden Problem: Less Spare Capacity

Saudi Arabia and the UAE keep extra oil production capacity they can turn on if global supplies run short. It is like keeping a spare tire in your car. But here is the catch: Saudi Arabia and the UAE have deliberately cut their own oil production recently to keep prices up. That spare capacity sits unused—and it can only get out of the Gulf through the Strait of Hormuz. If the strait is blocked, that spare capacity does them no good.

Both countries do have pipelines that bypass the strait. But these pipelines cannot move nearly as much oil as the strait does now. The gap is real and cannot be closed fast.

No one knows for sure if this week's tensions will turn into a real supply crunch. What is clear is that traders are betting on a higher chance of serious disruption. They are not saying it will definitely happen. They are saying the risk is higher than they thought last month—and pricing reflects that. For power plants, refineries, and countries that buy oil and gas to heat homes and run factories, that shift matters immediately, whether or not the disruption actually occurs.