In the maze of the Middle East's regional storm, Saudi Arabia, the self-styled leader of the region, has now lost its way. The kingdom's royal forces, equipped with the pride of American petrodollars, advanced fighter jets, Patriot missiles, and billions of dollars worth of weaponry, are today in a deep psychological crisis. Sleep has become forbidden in the luxurious royal palaces. The calculation that a few weeks of fierce airstrikes would reduce Yemen's rugged mountain tough guys, the Houthi...