Imam Husain's Brothers in Arms consists of a series of ten lectures delivered by Ayatollah Khamenei in the month of Muharram of 1393 (September 1972), approximately seven years prior to the triumph of the Islamic Revolution of Iran. The main thesis of the book goes against the millennial consensus of scholarly opinion that holds that the Imams were basically apolitical. Ayatollah Khamenei posits arguments based on...