The Saudi-led coalition fighting Iran-backed Houthi rebels in Yemen said a projectile has struck a passenger terminal at the international airport in Riyadh, a day after a missile struck the same terminal and killed 12 people.
The Houthis claimed responsibility for those attacks and others.
Saudi authorities said there were injuries in the latest attack on the King Khalid International Airport complex for terminals 3 and 4 for domestic flights.
Saturday’s missile attack was the deadliest in a Gulf Arab nation since the Iran war began, with another 300 people wounded, some critically. The airport was still closed on Sunday.
The sharp escalation in the new front in the Iran war threatens to draw in greater US military involvement as President Donald Trump has said he is weighing up joining the fight against the rebels.
The latest strike in Riyadh came shortly after the Houthis said the airport in the rebel-held Yemeni capital of Sanaa had been struck again, and blamed the Saudis.
At stake, again, in this escalation are global supplies and prices of oil as well as commercial shipping through a crucial alternative waterway to the Iran-threatened Strait of Hormuz — along with civilians and aviation throughout the region.
Mr Trump on Saturday also said he planned to speak to Saudi Crown Prince Mohammed bin Salman.
A US intervention could prompt the Houthis to halt shipping through the Bab el-Mandeb Strait at the southern end of the Red Sea off Yemen and further restrict the flow of oil out of the Persian Gulf.
The rebels seized key areas along the strait last month and the Saudi-led coalition has been trying to seize them back.
Saudi Arabia is running low on missile interceptors and has asked France, Britain, Pakistan and Egypt to deploy air defence support to the region, regional officials told the Associated Press last month, with one noting that the US has seen its own stock dwindle during the war with Iran.
Deeper US involvement in an unpopular regional war could further threaten Mr Trump’s Republican party in upcoming midterm elections. Both Mr Trump and Iran insist the American election calendar has no effect on their decisions on how to end the seven-month-old conflict.
Sunday’s attack occurred as the Saudis hosted a major international energy conference in Riyadh, with other high-profile events including an investment gathering on the horizon. Saudi Arabia, under Crown Prince Mohammed bin Salman, has sought to open more to the world as a business and tourism destination, but the Houthi attacks threaten those efforts.
“There is no way that somebody will break our back. We are like a phoenix, we come out of the ashes all the time,” the Saudi energy minister, Prince Abdulaziz bin Salman Al Saud, told the conference.
He added that the kingdom is also working on pipelines in addition to the East-West one that was attacked and closed for days last month.
Earlier Sunday, the Houthi-run health ministry said a child was killed and six people wounded in a suspected Saudi air strike on a house in Sanaa. The ministry also said 91 Yemenis have been killed by the Saudi-led coalition in five weeks, 60% of them women and children.
There was no immediate comment from Saudi authorities on the claims.
The rebels earlier acknowledged targeting Saudi airports and oil and military installations in recent days. On Sunday, they also claimed attacks on King Fahd Airport in the city of Damma, as well as oil and gas facilities in the kingdom’s east.
Separately, the rebels again warned “all airlines, experts, employees, workers and travellers against using Saudi airports and airspace, as they are vulnerable to attack and have become a theatre of operations for our forces”.
Brig Gen Yahya Saree, the group’s military spokesperson, wrote on X that airports in the holy cities of Mecca and Medina were exempt.
A Saudi statement said the dead included four Saudi citizens, two Bangladeshi nationals, a Palestinian, a US citizen, an Egyptian, a Jordanian, a Syrian and a Sudanese.
The Egyptian woman was a flight attendant identified as Azza Ramzy, who worked for Saudi airline Flynas, according to Egyptian state-run TV.
The Syrian woman was a widowed mother of four who had been living in Saudi Arabia for five years, a relative told the Associated Press. The Syrian Embassy identified her as Buthaina Ahmad Oweida. Her niece, Nisreen Oweida, said she had left during Syria’s civil war. She was living in Mecca and had been returning from a visit to her sister in Riyadh when she was killed.
The Houthis claimed attacks earlier in the week on King Khalid International Airport that killed three Saudis, including a pilot, and a Sudanese national. The airport, which has been targeted every day since at least Wednesday, has no military facilities.
Until recently, the Houthis had been largely on the sidelines of the Iran war, but they have developed their military capabilities in recent years to become one of Tehran’s most powerful allies. Now, the rebels are helping Iran to pressure a key US ally.
The Saudis and the Houthis began fighting in 2015, when the kingdom entered Yemen’s civil war on behalf of the internationally recognised government.
Relative calm after a 2022 ceasefire ended in July when the Houthis resumed attacks, saying the Saudis fired on the Sanaa airport as a plane from Iran was trying to land.
That revived anger over the Saudi-led blockade that has largely isolated Houthi-run areas. The Houthis say they have now imposed a blockade on Saudi Arabia.
Fighting has escalated, with the Saudi-led coalition providing air support for Yemeni government forces attempting to reverse recent Houthi gains near the Bab el-Mandeb, a crucial alternative to the Strait of Hormuz, where Iran has been attacking ships.
But Ahmed Nagi, the International Crisis Group’s senior analyst for Yemen, said the Houthi pressure tactics could backfire.
“Rather than pushing Riyadh to step back, attacks on critical Saudi infrastructure could make the Saudis more determined to continue the campaign,” he said.
