The Strait of Hormuz has been the site of increasing tensions in recent weeks.
The channel, which is only 21 miles wide at its narrowest point, links the Gulf of Oman and the Persian Gulf.
If the Strait were to be closed because of the threat of ongoing attacks, it would be a massive blow to the world’s economy.
Passage through the strait is the only way to move oil from Persian Gulf producers to the world’s oceans, and tensions in the area often affect oil prices.
The Strait is actually even narrower than its 21-mile width suggests. The shipping channels that can handle massive supertankers are only two miles wide heading in and out of the Gulf, forcing ships to pass through Iranian and Omani territorial waters.
About 22.5 million barrels of oil a day have passed through the Strait of Hormuz on average since the start of 2018, according to Vortexa, an energy analytics firm. That’s roughly 24% of daily global oil production.