An Iranian missile-and-drone attack that killed two American service members in Jordan prompted the United States to strike Revolutionary Guard forces and military infrastructure across Iran on Sunday, July 19, sharply escalating a renewed confrontation centred on the Strait of Hormuz.

One US service member remained missing after the July 17 attack, while four others who were evacuated to Jordanian hospitals were subsequently discharged.

Additional personnel treated for minor injuries returned to duty.

The retaliatory operation concluded at 11:30 p.m. Eastern time on Saturday, after the eighth consecutive night of American strikes.

The targets included Iranian coastal-surveillance and air-defence facilities, maritime assets, and missile and drone storage sites.

US forces also attacked units of the Islamic Revolutionary Guard Corps identified by the American military as responsible for launching the assault in Jordan.

The Guard is Iran’s most powerful military institution and controls much of the country’s ballistic-missile arsenal, drone programme and operations in the Gulf.

The American campaign had already expanded beyond immediate battlefield positions.

Strikes in southern Iran damaged a bridge and two tunnels on a principal route toward Bandar Abbas, the country’s largest commercial port and a strategic military centre near the narrowest section of the Strait of Hormuz.

Iranian authorities have reported damage to transport and electricity infrastructure as well as casualties from the wider bombardment.

The United States says its operations are intended to erode Iran’s ability to attack American personnel, neighbouring states and commercial shipping.

Iran has answered the US offensive by directing ballistic missiles and drones at Jordan, Kuwait and Bahrain, all of which host American forces or maintain close security relationships with Washington.

Kuwait activated its air defences and intercepted incoming weapons, but attacks also damaged power and desalination infrastructure and injured civilian workers.

Bahrain issued warnings and engaged aerial threats, while Jordanian forces intercepted additional drones after previously shooting down Iranian ballistic missiles that entered the kingdom’s airspace.

The attacks have placed civilian infrastructure at the centre of the conflict.

Desalination plants are indispensable in the arid Gulf states, where much of the drinking-water supply depends on converting seawater.

Damage to those facilities therefore carries consequences far beyond the immediate blast zone.

Gulf governments have condemned the Iranian strikes as violations of their sovereignty and international law, while the United Arab Emirates has warned Tehran against extending the campaign to civilian or economic targets on its territory.

The fighting follows the collapse of an interim US-Iran arrangement that had suspended major hostilities and supported the reopening of the Strait of Hormuz.

The narrow passage links the Persian Gulf with the Gulf of Oman and carries a substantial share of internationally traded oil and liquefied natural gas.

Disruption there can raise shipping costs, insurance premiums and energy prices well beyond the region, making freedom of navigation an economic as well as a military objective.

Washington resumed its naval blockade of traffic entering or leaving Iranian ports on July 14 while stating that other commercial vessels could continue operating in regional waters.

During an earlier phase of the blockade, American forces redirected more than 140 vessels, disabled nine ships described as non-compliant and permitted more than 50 humanitarian cargo vessels to pass.

Mariners have been instructed to monitor naval warnings and maintain radio contact with US forces near the Gulf of Oman and the approaches to Hormuz.

The latest deaths bring the human cost of the confrontation directly onto American forces stationed in partner countries.

More than 50,000 US military personnel are operating across the Middle East, placing bases, ships and logistics hubs within range of Iran’s missile and drone arsenal.

The United States has now linked retaliation for the Jordan attack with its broader effort to suppress Iranian military capabilities around Hormuz, while regional governments are reinforcing air defences and protecting essential infrastructure against further strikes.