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Why is the Strait of Hormuz so important to oil?

Iranian TV reported on Sunday that the top security authority in Iran must decide whether or not to close the Strait of Hormuz. The measure was reportedly approved by parliament as a response to U.S. attacks on Tehran's nuclear facilities.

Iran has threatened to close the Strait in the past, but never taken action. This would have restricted trade and affected global oil prices.

Here are some details on the Strait.

What is the STRAIT of HORMUZ?

The Strait is located between Oman, Iran and the Gulf of Oman. It connects the Gulf of Oman in the north with the Arabian Sea to the south.

The shipping lane is only 2 miles (3km) wide either way.

Why does it matter?

Around a fifth (or 450 million barrels) of all oil consumed in the world passes through this strait. Data from analytics firm Vortexa shows that between 2022 and the end of last month, 17.8 to 20.8 million barrels per day of crude oil, condensate, and fuels passed through the strait.

Saudi Arabia, Iran and the United Arab Emirates export the majority of their crude oil via the strait. This is mainly for Asia. Saudi Arabia and the UAE have tried to find alternative routes to bypass this strait.

The U.S. Energy Information Administration stated in June of last year that there could be unused capacity of about 2.6 million barrels a day (bpd), from existing UAE pipelines and Saudi pipelines, to bypass Hormuz.

Qatar, one of the largest LNG exporters in the world, ships almost all its LNG through this strait.

Fifth Fleet of the United States, based out of Bahrain, has been tasked to protect commercial shipping in this area.

History of Tensions

In 1973, Arab producers, led by Saudi Arabia and the United Arab Emirates (UAE), imposed an oil embargo against Western supporters of Israel during its war with Egypt.

OPEC crude is now mainly purchased by Asia, not the West.

In the past two decades, the U.S. has more than doubled the amount of oil liquids it produces. It is now one of the largest oil exporters in the world.

In the Tanker War that lasted from 1980-1988, both sides tried to disrupt the other's exports.

A U.S. Warship shot down a Iranian airliner in July 1988. Washington claimed it was an accident, while Tehran said that the attack was deliberate.

In response to U.S. sanctions and European ones, Iran threatened in January 2012 to close the Strait. In May 2019, four vessels, including two Saudi oil tanks, were attacked near the UAE coast outside the Strait of Hormuz.

Iran seized three vessels in 2023, one in 2024 and two in 2023, near or at the Strait of Hormuz. Some of these seizures were made after the U.S. seized tankers associated with Iran.

(source: Reuters)