In early November, Iranian-backed Yemeni rebels fired a ballistic missile at the far-off Saudi capital of Riyadh, retaliation for Saudi Arabia’s aerial intervention against them in Yemen’s civil war. Luckily, Saudi defense officials said, the missile was tracked and destroyed by their U.S.-made Patriot Advanced Capability-3 (PAC-3) kinetic interceptor before it reached its target, King Khalid International Airport — potentially preventing a worse outcome from what CNN described as “the first time the heart of the Saudi capital has been attacked and… a major escalation of the ongoing war in the region.”