“From a Grip on the Red Sea to Strikes Inside Saudi Arabia”: Escalating Houthi-Saudi Clashes Heighten Middle East Tensions as Attention Turns to U.S. Intervention

Houthi rebels intensify pressure with attacks on Saudi airports and energy infrastructure
Red Sea tensions escalate into a major territorial counteroffensive, deepening military confrontation
Prospect of direct U.S. intervention grows, but fears of a wider war and higher oil prices complicate the calculus

Yemen’s Iran-aligned Houthi rebels have issued a warning to stop using Saudi Arabia’s airspace and airports. Following a recent attack on King Khalid International Airport in Riyadh that inflicted heavy casualties, the group designated all Saudi airports except those in Mecca and Medina as potential targets, leaving open the prospect of further strikes. As military tensions between the two sides rapidly intensify, international attention is turning to whether the United States, which has so far confined its involvement to intelligence and operational support for Saudi Arabia, will intervene militarily—a decision seen as a pivotal factor in the course of the conflict.

Houthis Take Aim at Saudi Infrastructure

According to the Houthi-run Saba news agency on October 11 (local time), Houthi military spokesperson Yahya Saree said in a statement that day: “We reiterate our warning to all airlines, specialists, personnel and travelers using Saudi airports and airspace,” adding that “all Saudi airports, except those in the Islamic holy cities of Mecca and Medina, are potential targets and may become theaters of operations for our forces.” He said the group would “establish a policy of responding with ‘airport for airport, blockade for blockade and escalation for escalation’ until our objectives are achieved,” stressing that “everyone must take our warnings seriously, and the Saudi government bears full responsibility for any failure to provide protection.”

The Houthis have continued to attack Saudi facilities since announcing plans on October 5 to strike the kingdom’s airports, oil refineries and other infrastructure. On October 10, they struck King Khalid International Airport in Riyadh, causing numerous casualties. According to Saudi Arabia’s General Authority of Civil Aviation (GACA), at least 12 people were killed and 309 injured at the airport. The dead included four Saudi nationals, two Bangladeshis and one national each from the United States, Jordan, Palestine, Syria, Sudan and Egypt. The death toll rose to 13 on October 11 after another injured person died. The strike is regarded as the deadliest attack in a Gulf Arab state since the United States and Israel went to war with Iran in February.

Tensions Deepen Around the Red Sea

Experts identify the war that erupted in late February between the United States and Israel on one side and Iran on the other as the underlying driver of these military clashes. Since the outbreak of the war, Iran has imposed sweeping restrictions on vessels transiting the Strait of Hormuz in response to U.S. and Israeli airstrikes. Saudi Arabia consequently diversified its export routes, transporting crude produced in its Persian Gulf coastal oil fields through the East-West Pipeline to the Red Sea port of Yanbu. According to data reported by Al Jazeera on September 11, shipments of Saudi crude through the Bab el-Mandeb Strait increased by 21% from prewar levels after the Iran war began.

This shift in logistics networks gave the Houthis a new opportunity to exert pressure on Saudi Arabia. The group had already secured influence over maritime supply routes after seizing Yemen’s capital, Sanaa, in 2014 during the civil war against Saudi-backed Yemeni government forces, and capturing the key Red Sea port city of Hodeidah in October that year. The two sides had scaled back major military attacks following a UN-brokered truce in 2022, but armed clashes resumed after Saudi Arabia bombed Sanaa International Airport in July. Later that month, the Houthis declared a maritime blockade against Saudi vessels.

Hostilities Intensify by the Day

Under this pressure, Saudi Arabia prioritized securing alternative transport routes over making concessions. It reconfigured its logistics network by reducing vessel traffic through the Bab el-Mandeb Strait and using northern Red Sea routes and the Suez Canal instead. The Critical Threats Project (CTP) at the American Enterprise Institute (AEI) and the Institute for the Study of War (ISW) assessed that these routing changes blunted the maritime blockade’s impact, prompting the Houthis to intensify attacks on Saudi oil facilities. The group began expanding attacks on Saudi energy infrastructure in early September and claimed on September 15 to have struck Yanbu, a key crude export hub on the Red Sea coast, with missiles and drones.

The Houthis also conducted ground operations to strengthen their maritime control. On September 10, they captured the strategic Red Sea port city of Mocha, and on September 11 advanced onto Perim Island in the Bab el-Mandeb Strait and into nearby coastal areas. The Washington Post (WP) assessed that “with the blockade of the Strait of Hormuz increasing the importance of the Bab el-Mandeb Strait, Houthi territorial expansion could provide Iran with a substantial strategic advantage.” With Iran choking off the Strait of Hormuz and the Houthis threatening the southern gateway to the Red Sea, the Middle East’s two principal maritime transport corridors have effectively come under pressure from Iran and its aligned forces.

Table 1. Evolution of the Saudi-Houthi Conflict

Saudi Arabia and Yemeni Government Forces Strike Back

As the Houthi offensive intensified, Saudi Arabia launched a counterattack through a large-scale military operation. According to reports by The Wall Street Journal (WSJ), The Guardian and other outlets, Saudi-backed Yemeni government forces announced on October 4 the launch of an operation to retake Houthi-held territory, followed on October 5 by a full-scale ground offensive concentrated around the Bab el-Mandeb Strait. Named “Dawn of Yemen,” the operation identified Mocha and the Dhubab area north of the strait, which connects the Red Sea and the Gulf of Aden, as its principal objectives.

Yemeni government forces subsequently said they had seized an airport in the Dhubab area and cut the road linking Dhubab and Mocha. They also claimed to have encircled hundreds of Houthi fighters stationed in Dhubab, with some withdrawing by sea. Reuters reported the same day that Yemeni government forces, backed by extensive Saudi airstrikes, had advanced to the outskirts of Mocha, while some Houthi units retreated to inland highlands. The Saudi-led coalition reportedly deployed roughly 100 fighter jets to provide air support for Yemeni government forces, concentrating strikes on military installations, weapons depots and other targets across an area stretching from the Red Sea coast to the Houthi-held capital, Sanaa.

Will the United States Intervene Militarily?

As the Houthi-Saudi confrontation grows more acute, the possibility of direct U.S. military intervention is drawing international attention as a new variable. Washington has so far provided the Saudi-led coalition with indirect assistance, including intelligence sharing, target identification and operational planning, but has not participated in direct airstrikes against the Houthis. The death of a U.S. citizen at King Khalid International Airport, however, has changed the situation. U.S. Secretary of State Marco Rubio officially confirmed the American’s death in a statement and strongly condemned the Houthi attack. He called for an immediate end to attacks that disregard innocent civilian lives and reaffirmed U.S. support for Saudi Arabia.

U.S. President Donald Trump also left open the possibility of military intervention. Asked by reporters on October 10 whether the United States might join Saudi Arabia’s military campaign against the Houthis, Trump replied: “We may. We’re gonna look at it.” He said he would make a decision quickly after receiving reports on the recent attacks and planned to discuss the matter with Saudi Crown Prince Mohammed bin Salman. Some observers, however, believe that direct intervention would be a difficult choice for Trump ahead of November’s midterm elections. If the Houthis respond to U.S. strikes with retaliatory attacks on refineries and export ports, the resulting economic instability could erode public support. April Alley, a senior fellow at The Washington Institute for Near East Policy, told the WP: “There are already many factors pushing oil prices higher,” adding that “the Trump administration has tried to contain the expansion of the conflict as much as possible, but the situation is already slipping beyond its control.”