A recent article in Britain’s New Statesman magazine warned that, as Britain’s culture war heats up, the religious groups that threaten public tranquility are mostly being supported either by the United States or by Saudi Arabia, two nations that the magazine assumes to be equivalent in extremism. “Puritanical yet wealthy, convinced of their God-given mission to the rest of the world, sure of a divinely inspired history,” the article, titled “Faith Invaders,” declared, Saudi Arabia and the United States are surprisingly similar in their mixture of religion, politics and interference in other countries’ affairs. Saudi Arabia has Wahhabi Islam, Middle...