This article focuses on the ideological threat that prompted those authoritarian regimes to play the sectarian card: the spread of Islamism. It argues that, at its core, the split in the Middle East is not a sectarian clash opposing Sunnis and Shiites — although after years of bloody conflict, many of the actors involved have come to see it that way. It is a geopolitical battle between, on the one side, states and groups aligned with the West and interested in preserving the regional status quo; and, on the other, states and groups characterized by their anti-Western rhetoric and eager to subvert that status quo. In some regards, it is a replay of the Arab Cold War — but extended to Iran, and with Islamism replacing Arab socialism as the subverting ideology.