The Seljuk Sultan Kay Kāʾūs I and the Assassins

Abstract

This article marshals the known evidence for the political relations between the Seljuk sultan of Anatolia or Rūm, Kay Kāʾūs I (r. 608–616/1211–1220), and the Assassins or Ismailis in Iran and Syria. This evidence indicates that the sultan corresponded with the grand master of the Assassins in Iran, was aware of their activities in western Iran and of their coreligionists in Syria, paid protection money to them, and included them in his political calculations.