DUBAI, United Arab Emirates — The U.S. military said Tuesday that it carried out strikes on Iran following the crash of an Army helicopter near the Strait of Hormuz that U.S. President Donald Trump blamed on the Islamic Republic. Tehran vowed to respond.

The strikes were “a proportional response to unjustified Iranian aggression,” U.S. Central Command said on social media. Iranian state media reported that explosions were heard on Qeshm Island in the Strait of Hormuz, a critical shipping lane that Iran has effectively closed during the war, before saying the wave of American attacks in the south had “subsided.”

Trump said earlier in a social media post that Iran had shot down the aircraft while it was on patrol over the strait and declared that the U.S. “must, of necessity, respond to this attack.” Iran’s top diplomat said foreign military forces near its territory “are at constant risk” and later vowed that there would be a response to the new U.S. strikes.

Iranian forces “will leave no attack or threat unanswered,” Iranian Foreign Minister Abbas Araghchi said on the social platform X. “Leave our region if you want to be safe.”

The downing of the helicopter and the strikes by the U.S. military further strained a two-month ceasefire a day after Iran and Israel exchanged fire for the first time since the fragile truce took effect.

Iranian state television said Tuesday that the Israeli attacks killed at least two members of the country’s air-defense units.

Since the U.S. and Israel began striking Iran on Feb. 28, the war has shaken the global economy, driven up energy prices around the world and made many basics, including food, more expensive.

Officials have been unable to turn the April ceasefire into a deal to permanently end the conflict, particularly as Israel intensifies and expands its military campaign in Lebanon against the Iranian-backed militia Hezbollah.

US helicopter collided with Iranian drone, official says

The Army AH-64 Apache attack helicopter went down after colliding with an Iranian drone, according to a U.S. official, who spoke on condition of anonymity to discuss an ongoing investigation.

It wasn’t clear whether the collision was intentional, and official statements only said the crash is under investigation. CNN, CBS News and other outlets earlier reported the collision.

In the first known operation of its kind by the American military, a drone boat rescued two aviators at 3:30 a.m. local time Tuesday, about two hours after their aircraft went down during a patrol off the coast of Oman, U.S. Central Command said.

Trump said both service members “are safe and uninjured.”

The U.S. service members were spotted and picked up by a drone boat that took them to another location on the water, where they were picked up by a helicopter, said Capt. Tim Hawkins, a spokesman for U.S. Central Command. He initially said the drone took the two to shore, and he did not elaborate on the updated timeline.

It was the first known drone rescue at sea by the U.S. military, Hawkins said.

AH-64 Apache helicopters have been a key asset for the American military as it enforces a blockade on Iranian crude oil shipments and tankers, seeking to pressure Tehran into a deal. The helicopters have also been used by the United Arab Emirates to shoot down Iranian drones.

The drone used to perform the rescue was a 24-foot vessel called a Corsair, Hawkins said. It’s manufactured by Saronic Technologies.

The drone was assigned to the Navy’s Task Force 59, established in 2021 as the Navy’s first uncrewed and artificial intelligence unit that focuses on maritime security in the Middle East, including the Strait of Hormuz and the Suez Canal.

Soon after Trump made his accusation that Iran shot down the aircraft, Araghchi said the strait is “thousands of miles away from U.S. shores.”