Why Can't Saudi Arabia Defend Itself from the Houthis?

This weekend, Saudi Arabia weathered its deadliest attack on civilians in the last decade, when a ballistic missile from Houthi-controlled Yemen crashed down upon King Khalid International Airport. In ordinary times, the airport serves between 700 and 800 flights to and from the Saudi capital of Riyadh.

But last Saturday, that Houthi ballistic missile struck a passenger terminal at King Khalid in what was likely an attempt by the Houthis to hit civilian infrastructure.

At least 13 people were killed in the strike, and over 300 others were wounded. The attack was a shock for Saudi leaders and civilians alike, but it wasn't an isolated incident. Just days prior, the Houthis had struck other airports in Riyadh, Dumaan, and Abha, in the nation's south.