Since 2015, the Crown Prince has also got the country bogged down in a costly and unwinnable war in Yemen, which has spawned the world’s largest humanitarian disaster. And now he has disrupted the kingdom’s relationship with the United States, its most important ally. The Biden Administration has notified the kingdom that it will no longer provide offensive military equipment to pursue the war in Yemen, although it has vowed to continue selling weapons to defend the kingdom. This weekend, after the Saudi military intercepted a missile attack near the capital and bomb-laden drones in the south, both launched by Houthi rebels in Yemen, the State Department reaffirmed its “longstanding partnership” to protect the kingdom. Yet experts say that Saudi Arabia needs the United States far more than Washington needs Riyadh. “We have total and absolute leverage over the Saudi military,” Riedel said.