In December, on the eve of Pearl Harbor Day, President Obama spoke to the nation from the Oval Office about the attack in San Bernardino, California, that left fourteen people dead. “The terrorist threat has evolved into a new phase,” the president said. The married couple responsible for the attack, he told the camera, “had gone down the dark path of radicalization, embracing a perverted interpretation of Islam that calls for war against America and the West.” They were “part of a cult of death,” which he contrasted with America’s “belief in human dignity.” In the battle against the…