Has Intra-Islamic Violence in the Middle East Finally Peaked?

Much of the bloodshed that has wracked the Middle East in the past decade has been motivated by intra-Islamic religious differences—most often pitting Shiites against Sunnis, but also Sunnis against Alawites (the ruling religious minority in Syria) and Islamic State against everyone who has not accepted its own particular brand of Sunnism. To Hassan Hassan, this violence has marked the culmination of four decades of sectarian conflict in the Muslim world that began with the Islamic Revolution in Iran in the late 1970 and the subsequent rise of the Salafist-jihadist ideology that motivates al-Qaeda and Islamic State. He now believes this period is coming to an end: