Houthi Missiles Hit Riyadh as Iran's Proxy War Widens

Yemen’s Houthis fired a ballistic missile at King Khalid International Airport in Riyadh on Wednesday, the group’s military spokesperson said, after vowing to keep striking Saudi airports and oil facilities. The airport will remain closed until October 17. A fire at an Aramco complex in Dhahran spread across several floors.

The Houthis said the attacks were retaliation for Saudi actions in Yemen. The scale of the campaign tells its own story. In the week before this report, the group struck Riyadh’s international airport three days in a row. A Saturday strike killed at least 13 people and injured 300. On Tuesday, they hit the headquarters of Saudi state oil giant Aramco in Dhahran, in the kingdom’s east.

The Security Picture

Saudi Arabia’s attempt to contain the Houthis while pursuing economic growth is collapsing, analysts and diplomats said. It poses one of the most serious tests for Crown Prince Mohammed bin Salman since he rose to power. A decade ago, he led the kingdom into a war to oust the Houthis. That conflict became a quagmire, drained Saudi resources and drew widespread backlash over its bombing campaign. Riyadh cut its losses and kept an uneasy truce with the group from 2022. That truce lasted four years.

“This is the collapse of Saudi Arabia’s containment strategy,” said Rob Geist Pinfold, an international security expert at King’s College London. He compared the Saudi approach to Israel’s treatment of Hamas in Gaza before 7 October 2023. Saudi leaders felt they had the Houthis where they wanted them, weren’t ready for a political solution, but believed they had disincentivized further escalation.

The truce broke after Saudi Arabia bombed Sanaa airport in July to stop a plane carrying Houthi officials from landing. Iranian, Syrian and Hezbollah military advisers and weapons systems were on board, Middle East Eye reported. The Houthis answered by declaring a blockade against Saudi shipping and launching a lightning offensive down the Red Sea coast last month. Saudi Arabia and its Yemeni allies have struggled to counter it.

A Better-Armed Adversary

The Houthis built their targeting skills after 7 October 2023, attacking Red Sea vessels in what they called solidarity with Palestinians in Gaza. That was three years ago. A four-year ceasefire then gave the group time to entrench itself in Yemen’s rugged northwestern mountains. They have also received more assistance from Iran and even Russia, Middle East Eye reported.

The results show up in the air defence data. A western defence official in Riyadh said Saudi Arabia is intercepting the vast majority of missiles and drones, probably in the low 90 percent range. But the Houthis have grown more skilled at getting through. “The Houthis are a lot more effective than Iran was back in February. They learned from earlier this year,” the official said, speaking anonymously. “It is a combination of innovation, rapid speed and the latest intelligence.”

The kingdom spends 6.5 percent of its gross domestic product on military equipment, according to the Stockholm International Peace Research Institute, one of the world’s highest ratios. It buys American weapons, including Patriot and Thaad systems. Still, Gregory Gause of the Middle East Institute said, “the Houthis can hit, at will, these incredibly important facilities in Saudi Arabia and the Saudis can’t defend them.” He added: “They clearly have much better missiles and targeting technology than they did before.”

Gause laid out the asymmetry plainly. “A Houthi strike on Riyadh airport is so much more damaging to the Saudis than a Saudi strike on Sanaa airport is to the Houthis,” he said. The Houthis, he noted, aren’t interested in building a modern economy.

Restraint and Its Limits

Video from Saturday’s strike showed Umrah pilgrims absorbing the blast, prompting widespread condemnation of the Houthis. Diplomats and analysts said Riyadh has mostly responded with restraint, gaining some sympathy abroad. Bader al-Saif of Kuwait University said the Saudis have upped their game on more precise air raids. But he questioned whether they’re holding back too much. “Being dovish when you are being attacked is not quite wise,” he said. “The Houthis need to be pushed to the negotiating table, and that means forcing changes on the ground.”

On the ground, Saudi options are thin. The kingdom is reluctant to send its own troops into Yemen and relies on local allies. Yemen’s internationally recognised government, which Riyadh backs, has forces that are deeply fractured. Earlier this month, it announced a full-scale offensive to retake all territory the Houthis have held since 2014, a span of 12 years. A western official in the Gulf tracking it said he was “disappointed.” “One force showed up to fight without food and water. Other units have just melted away, leaving the flanks exposed,” he said.

The most effective anti-Houthi fighters are factions aligned with the UAE, and Saudi Arabia has clashed with Abu Dhabi over its support for their secessionist ambitions. On Tuesday, Aidarous al-Zubaidi, the exiled head of Yemen’s secessionist movement, appeared in a video with a map of the former southern Yemeni state behind him and urged recognition of a southern state. “His statement was not one of cohesion,” said Ibrahim Jalal, an independent Yemen expert.

Saudi Arabia has also reached for allies abroad. Earlier this month, it activated the Mecca Pact, a joint defence agreement with Pakistan and Turkey. Islamabad has sent military aid, and Turkey is expected to follow. The US has declined to become publicly involved, though experts said it has provided defensive support and intelligence.

The Iran Question

The economic stakes are climbing. Saudi Arabia expects its economy to shrink by 3.6 percent this year and has already scaled back megaprojects under Vision 2030. Its East-West oil pipeline was temporarily disabled in a strike last month that the kingdom blamed on Iran-aligned militias in Iraq. Riyadh is also reluctant to keep its airport shut for long, with a flagship investment conference due at the end of the month.

Experts said the Houthis’ offensive can’t be separated from the stalled ceasefire between Iran and the US. “The only way the Houthis get restrained here is if the Iranians tell them to,” Gause said. “That can only come from a US-Iran political deal.”

Why This Matters: The Houthi campaign shows what happens when an armed group with outside backing is contained rather than defeated. A truce held four years, and the group used the time to sharpen its missiles and its targeting. Iran’s network of proxies can open pressure points against its rivals, from the Red Sea to Saudi oil infrastructure. The reported Iranian, Syrian and Hezbollah presence on the Sanaa flight points to a coordinated axis rather than isolated militias. For Israel, which has faced the same pattern from Hamas and Hezbollah, the lesson is plain: restraint buys time only if the adversary doesn’t use it to rearm. For Riyadh, even a 90-plus percent interception rate isn’t enough when one missile can shut a capital’s airport.