Iran responded with attacks targeting Bahrain, Kuwait and Jordan, part of a widening round of retaliatory strikes that threaten to derail talks to reach an end to the Iran war.
Iran launched attacks on sites in Bahrain, Kuwait, which both sounded alerts and fired air defences in response. Jordan also reported shooting down five missiles that Iran shot at an air base hosting US forces.
Air raid sirens sounded across Bahrain overnight and authorities urged residents to seek shelter after Iran said it had targeted a major US military facility in the Gulf kingdom.
Bahrain's Interior Ministry said on X early on Wednesday that residents should move to safe locations and remain calm.
Earlier, Iran's Islamic Revolutionary Guard Corps said they had carried out an attack on the headquarters of the US Navy's Fifth Fleet in Bahrain in response to overnight US airstrikes, according to Iranian media reports.
The downing of the US Apache attack helicopter on Tuesday and the strikes by the US military further strained the ceasefire a day after Iran and Israel exchanged fire for the first time since the fragile truce took effect.
Iranian state television said the Israeli attacks killed at least two members of the country's air-defence units.
Fighter jets from the US Air Force and Navy conducted the strikes in Iran, the US military's Central Command said, targeting "air defense, ground control stations, and surveillance radar sites".
Iran acknowledged strikes around Bandar Abbas and Qeshm Island, but gave no details on the damage.
"The operation was a proportional response to recent attacks on US forces and international commercial ships transiting regional waters," Central Command said.
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 US strikes.
Iranian forces "will leave no attack or threat unanswered," Iranian Foreign Minister Abbas Araghchi said on X.
"Leave our region if you want to be safe."
Jordan said on Wednesday it shot down five incoming missiles launched by Iran, which Iran said targeted the Muwaffaq Salti Air Base. That air base has hosted American F-35 fighter jets and other aircraft.
Jordan's state-run Petra news agency carried the statement from its military, which added that there were no injuries in the attack and that explosives experts had examined the debris from the interceptions.
A US Army AH-64 Apache attack helicopter went down near the Strait of Hormuz after colliding with an Iranian drone, according to a US 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.
In the first known operation of its kind by the American military, a drone boat rescued two aviators at 3:30am local time on Tuesday, about two hours after their aircraft went down during a patrol off the coast of Oman, US Central Command said.
US President Donald Trump said both service members were "safe and uninjured".
The US 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 Captain. Tim Hawkins, a spokesman for US Central Command.
It was the first known drone rescue at sea by the US 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.
Before he accused Iran of downing the US helicopter, Trump expressed renewed optimism over negotiations with Iran.
with dpa
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