
Iran Strategy Brief No. 6: The Sunni-Shi’a Divide and Today’s Iran
Islam has two main sects, Sunni and Shi’a. The process by which the original schism materialized and played out—though well over 1,400 years old—remains the foundation of the ideas and tensions which continue to drive the split. As such, understanding what happened nearly a millennia-and-a-half ago is essential to understanding the contemporary divisions that exist within the Muslim world.