Iran fired on a cargo ship in the Strait of Hormuz on June 25, 2026, according to U.S. officials who told Reuters. The container ship was damaged by a projectile near the coast of Oman. This is the latest in a series of Iranian attacks on ships in the waterway, and it happened the same day that oil shipments through the strait reached their highest level since the war began.

Iran has been increasingly aggressive in this area. In late May, South Korea said an earlier ship attack likely used an Iranian-made missile, based on debris recovered, Reuters reported. Just days before the June 25 attack, Iran and the United States had a public disagreement over the strait, with Iran pointing to Israeli strikes on Lebanon, according to AP.

What Iran Actually Wants

Behind the attacks is a bigger demand: Iran wants to charge shipping companies a fee to pass through the strait. Secretary of State Marco Rubio said on June 25 that the United States will not agree to any deal that lets Iran collect such tolls. He also warned that if Iran succeeds here, other countries might try the same thing in other narrow sea passages, Gulf News reported. Rubio added that the Gulf countries that export oil also oppose Iran's idea, NewsNation reported.

Why This Waterway Matters So Much

The Strait of Hormuz is one of the most important shipping lanes in the world. About 20 percent of all oil traded globally moves through it. At its narrowest point, the strait is only 21 nautical miles wide, with just two small shipping channels of about two miles each. There is no practical alternative route for most oil from the Persian Gulf. Saudi Arabia and the United Arab Emirates have pipelines that go around the strait, but these cannot handle all the oil that the region needs to export.

Because Iran controls part of the strait, it has a lot of power. Just the threat of closing the passage — or slowing down ships — can shake global oil markets and force Western countries to pay attention to Iran's demands.

Rather than threaten to shut down the strait entirely, which would likely start a military conflict, Iran seems to be trying something different. It wants to see if it can force countries to pay fees while the United States and Iran negotiate over nuclear weapons and economic sanctions. The U.S. has made clear it will not accept this in any deal.

But here is what matters: by attacking ships, Iran is showing it is willing to use force if countries don't pay. Iran's approach resembles an earlier incident. In 2019, Iran shot down a U.S. military drone flying over the strait, confirmed by the Department of Defense. It hit the drone to prove a point without attacking American soldiers or starting a larger war. Attacking cargo ships instead of American warships follows the same idea — causing problems and showing strength while keeping some control over how much this escalates.

The timing is significant. More ships are moving through the strait than ever before, which means more targets and a bigger audience for Iran's show of force. Insurance companies and oil traders will immediately raise the cost of shipping through these waters. For people negotiating the nuclear deal, this attack adds pressure right when both sides are trying to figure out what they can accept.

What comes next depends on whether these attacks are Iran's way of pushing for a better deal, or if they mark the start of something more serious. So far, Iran has not destroyed ships outright, only damaged them, which suggests Iran is being somewhat careful. But attacks are happening more often, and negotiators need to move fast.