The US launched a barrage of airstrikes against Iran on Tuesday, prompting Iranian retaliation, in the most serious escalation in weeks in a conflict that has driven up global energy prices and weighed on President Donald Trump’s popularity at home.

The strikes followed a weekend exchange of fire — the first since July — and attacks on Monday on two tankers leaving the Strait of Hormuz, the global oil supply waterway that Iran has effectively closed to shipping. Global oil prices rose more than $4 a barrel on Tuesday, settling at a five-week high.

Tehran struck back at US assets in Jordan, Bahrain and Iraq and remained defiant, warning that it would prevent oil being exported from the Gulf, despite a threat by Trump to hit Iran “hard” and a warning from US Treasury Secretary Scott Bessent that Washington was about to impose new sanctions.

Five people were killed and 50 wounded at a wedding near Sirik, a coastal area on the Strait of Hormuz, the Iranian Red Crescent reported. The Mehr news agency said a 4-year-old child was among those killed, while the IRNA news agency, citing a provincial official, put the number of wounded at ⁠68.

There was no immediate US reaction to the reports.

The Islamic Revolutionary Guard Corps (IRGC) said in a statement the US attacks would “tighten the lock” on the Strait of Hormuz, which carried one of every five barrels of the world’s oil before the war.

“If the enemy wants us not to export oil from the Persian Gulf, no one will be able to export oil,” Iranian parliament speaker Mohammad Baqer Qalibaf was quoted as saying by Iranian media.

Neither threats of strikes nor new economic sanctions appear to have materially changed the position of Tehran, which has been under heavy economic sanctions for half a century.

The US strikes followed a month of relative calm in which the US and Iran mostly held their fire while exchanging hostile statements.

The US military’s Central Command said it had completed a wave of strikes against IRGC targets on Tuesday including air defense sites, radar systems, maritime assets and facilities, mine-laying capabilities, and communications sites.

There was no immediate US reaction to the reports.

The Islamic Revolutionary Guard Corps (IRGC) said in a statement the US attacks would “tighten the lock” on the Strait of Hormuz, which carried one of every five barrels of the world’s oil before the war.

“If the enemy wants us not to export oil from the Persian Gulf, no one will be able to export oil,” Iranian parliament speaker Mohammad Baqer Qalibaf was quoted as saying by Iranian media.

Neither threats of strikes nor new economic sanctions appear to have materially changed the position of Tehran, which has been under heavy economic sanctions for half a century.

The US strikes followed a month of relative calm in which the US and Iran mostly held their fire while exchanging hostile statements.

The US military’s Central Command said it had completed a wave of strikes against IRGC targets on Tuesday including air defense sites, radar systems, maritime assets and facilities, mine-laying capabilities, and communications sites.

There were no casualties so far from the Iranian attack on facilities in Jordan, two US officials told Reuters. This was based on initial information and could change as Iranian attacks continued, the officials said.

Iranian media also reported the country’s military targeted a US base in Bahrain with a large-scale drone attack, and the Kuwaiti army reported its air defenses ⁠were responding to a hostile drone attack. Since the US and Israel attacked Iran on February 28, Iran has responded with missile and drone strikes on US allies in the region.

Jordan’s armed forces said its air defence systems dealt with 13 ballistic missiles that entered the kingdom’s airspace, 10 of which were intercepted and three fell in remote areas. Bahrain said Iranian drones were intercepted and destroyed.

The IRGC also said its ground forces carried out combined missile and drone attacks on US bases in Erbil in northern ⁠Iraq, destroying a repair facility, warehouses for technical equipment and a system used to control a US surveillance balloon. The IRGC also said fuel tanks were set ablaze and several US personnel were killed.

Neither Iraq nor the US had confirmed the attack.

The six-month-old conflict had shifted into an economic standoff before the weekend strikes, in which US forces attacked Iran’s Larak Island on Sunday and Iran responded by launching missiles at two US air bases in Jordan.

In an interview ⁠with Fox News, Trump played down the prospects of another ceasefire. The US and Iran reached a deal in June that quickly fell apart, largely over interpretations of Iranian control of the Strait of Hormuz.

“I think an agreement with them isn’t worth the paper it’s written on. We gave them a lot of chances,” Trump told Fox News.