A war involving Iran, Israel and the United States has grown in the Middle East since late February 2026, and one of the biggest worries is a narrow sea passage called the Strait of Hormuz. It sits between Iran and Oman and links the Persian Gulf to the open sea, so it is the main route for many ships leaving Gulf countries.
The strait is very important because a huge share of the world’s oil and gas travels through it, which helps power cars, buses, planes and factories in many countries. Experts say about one-fifth of the world’s oil and gas shipments normally pass through this route, so trouble there can quickly push up fuel prices around the world.
In simple terms, the Strait of Hormuz is a bit like a narrow gate on a busy motorway. When that gate is open, tankers and cargo ships can move through, but when fighting makes it unsafe, traffic slows down or stops.
Reports say Iran has disrupted the strait by attacking some ships, laying sea mines in the water and using missiles, drones and fast boats to scare vessels away. Iran has also said ships should coordinate with its navy before passing, while some Iranian officials have sent mixed messages about whether the waterway is fully closed.
Because of these dangers, many tankers have halted, some ships have been stuck waiting, and a few have only been allowed through with special permission. Reuters has reported that traffic through the strait has dropped sharply, showing how badly the fighting has affected this route.
When fewer ships can pass, less oil and gas reaches buyers, and that can make petrol, heating and some goods more expensive far away from the war zone. Countries have started releasing emergency oil reserves to calm prices, but leaders still know that reopening the strait safely is the real answer.
That is why the Strait of Hormuz matters so much in this war. It is not just a local waterway near Iran, but a small stretch of sea with a very big effect on the whole world.
