US airstrikes hit northern Iran as it disables ship trying to run the blockade

When the U.S. and Israel launched the war on Iran on Feb. 28, Tehran effectively closed the strait to shipping traffic — a move that sent the price of oil, fertilizer and many other goods soaring far beyond the region and gave Iran major leverage in negotiations.

US and Iran trade threats as attacks intensify

Those rising prices pose a particular challenge to U.S. President Donald Trump and his Republican Party, which hopes to retain control of Congress in elections in November. But Washington has struggled to successfully reopen the waterway, leading to Trump reimposing the naval blockade Wednesday.

Iran’s parliament speaker and lead negotiator, Mohammad Bagher Qalibaf, said Iran was prepared for a fuller military confrontation if the U.S. does not live up to the terms of the interim deal, and Iran’s paramilitary Revolutionary Guard threatened to halt all energy exports from the Middle East over the blockade.

“The export of oil and gas from the region will be either for everyone or for no one,” the Guard said.

Trump again insisted Iran was ready to strike a peace deal, but he did not elaborate.

“They don’t like what we’re doing, and they do want to settle. We’ll find out whether or not we settle with them, or we just finish it off,” he said Wednesday at the U.S. Army War College in Pennsylvania.

Trump separately said on social media that Tehran made a goodwill gesture by releasing an American citizen wrongly detained in Iran since 2024. He didn’t release further details. Human rights lawyer Jared Genser released a statement identifying the detainee as his client Dena Karari, a U.S.-Iranian citizen who runs a nonprofit and was charged with espionage.

Iran did not immediately acknowledge the release and her case hadn't been publicly known, which sometimes happens with detentions in the Islamic Republic.

Both the US and Iran launch attacks as the blockade is reimposed

The U.S. strikes early Thursday hit around Tehran, state media reported. It also reported American attacks targeted Semnan province, home to Iran’s ballistic missile production and space program.

On Wednesday, the U.S. resumed striking Iran during daylight — further showing the increasing tempo of the attacks. Its attack on Greater Tunb Island, a strategic point in the Strait of Hormuz — targeted Iranian defense and missile sites, Central Command said.

Meanwhile, the U.S. military said it opened fire on the Curacao-flagged oil tanker Belma sailing toward Kharg Island, Iran's main oil export terminal in the Persian Gulf. After the ship “ignored multiple warnings,” a U.S. aircraft disabled the merchant vessel by firing a missile into the ship’s smokestack.

Another American strike Wednesday targeted a barracks for Iran’s 388th Mechanized Infantry Brigade, which operates tanks and armored vehicles, in Sistan and Baluchestan province, Iranian state television reported. The report said Americans fired at least 13 missiles in the attack and the seven dead included conscripts and career soldiers. A number of troops were wounded.

The Strait of Hormuz remains at the heart of the fighting

The latest round of fighting is focused on the Strait of Hormuz. How to reopen the strait has bedeviled the U.S. since Iran choked it off in the early days of the war.

During the interim deal, some ships began moving through the passage using a route near Oman overseen by the U.S. military that is outside Tehran’s control.

In recent days, Iran attacked ships using that route — and back-and-forth attacks ensued. The U.S. has threatened to reopen the strait by force — but experts say that would require a much bigger armada if not tens of thousands of ground troops. Imposing the blockade is another way to put pressure on Iran.

But in the meantime, oil prices are rising. The price for Brent crude oil, the international standard, traded above $85 a barrel on Thursday — more than 15% higher than the price before the war, but still well below the nearly $120 reached at the height of the conflict.

Associated Press writers Michelle Price, Konstantin Toropin, Will Weissert, Collin Binkley and Fatima Hussein in Washington, Christopher Weber in Los Angeles, and Nasser Karimi in Tehran, Iran, contributed to this report.