Three Saudis Were Killed By a Houthi Attack. The Crown Prince Vowed a ‘Firm’ Response.

A Saudi Arabia-led coalition vowed a "firm" response against Yemen's Houthi rebels after a strike against an airport killed three people.

The attack in question hit the King Khalid International Airport in Riyadh, with one of the casualties being Captain Hamoud Ali Alkalthami. Hundreds of flights were cancelled as a result.

The coalition reacted by targeting missile launchers used by the Iran-backed group, with Major General Turki al-Malki, the coalition's spokesperson, noting that "Houthi attacks on civilians and civilian infrastructure will be met with a firm response."

The coalition involved in the conflict continues to grow. And a new report detailed that Syria could become the latest country to provide material support to Yemen and Saudi Arabia in the fight against the Houthis.

Syrian President Ahmed al-Sharaa is considering sending troops to Yemen, according to a new Axios report published on Thursday.

The outlet noted that discussions are largely taking place between Damascus and Riyadh, but the Trump administration has been consulted as well and doesn't oppose to the move in principle.

A U.S. official said Syrian troops could help out Yemeni counterparts, who are less trained than the Houthis. Between 10,000 and 20,000 could be involved in the operation, should it be confirmed.

Turkey and Pakistan are also providing support to Saudi Arabia and Yemen as a result of their recently-signed joint defense agreement with Riyadh, in which an attack against one of them is considered an attack against all.

Ankara is sending defensive and technical support. An official told Reuters that the country won't send troops and its aid will be in the form of equipment, intelligence sharing and weapons systems.

Pakistan, in turn, has sent about 8,000 troops and air force fighter jets to conduct strikes, according to another report. Troops, however, are unlikely to engage in any fighting and will be tasked with defending Saudi oil infrastructure.

The alliance between Yemen and Saudi Arabia recently claimed it retook territory seized a month ago along the Bab el-Mandeb strait, a key waterway through which 12% of the world's oil passes.

The Yemeni government declared a general mobilization in late September, with head of Yemen's presidential council Rashad al-Alimi calling on people to rally around the government. He also offered amnesty to Houthi fighters defecting.