The Houthi militia in Yemen said on Saturday that it had attacked Saudi Arabia’s capital and oil facilities with a barrage of missiles and drones, a significant escalation in the renewed war between the kingdom and the Iranian-backed group. The Saudis intercepted a Houthi missile launched toward Riyadh, the capital, according to Maj. Gen. Turki Al-Maliki, the spokesman for the Saudi-led military coalition in Yemen. He added in a statement that air defenses had fended off assaults on “civilians and civilian infrastructure” in several other cities in the kingdom, including coastal Yanbu, where the Houthis said they attacked oil facilities....