The war between Israel and Iran has raised concerns that Iran could try to close the Strait of Hormuz, the world’s most important oil chokepoint.

Naval forces in the Middle East warned that ships, especially U.S.-linked ones, could be at heightened risk after the U.S. strikes on Iran.

Iranian officials have threatened to mine the waterway, which is a key shipping route for oil and gas. One way that Iran could potentially retaliate for the American strikes on three of its nuclear sites, analysts say, would be to shut down the Strait of Hormuz, a key shipping route for oil and gas.