A LITTLE MORE THAN three years ago, Morocco experienced Islamic terrorism firsthand. On May 16, 2003, Casablanca was hit with four simultaneous attacks that left 45 people dead and hundreds injured. The attacks were perpetrated by Moroccan citizens who were members of the al Qaeda-affiliated Moroccan Islamic Combatant Group (known by its French acronym, GICM). Needless to say, the kingdom was stunned that its sons had turned violently against it. Now, the dismantling of another extensive Islamist cell in Morocco confirms that extremism is spreading inside what has long been viewed as one of the most moderate countries in the...