By Kyle Orton (@KyleWOrton) on August 20, 2015

This is the fourth of a six-part series. Read parts one, two, and three.

Girdkuh fortress, northern Iran

The Nizaris’ Turn to Sunnism

In Persia, a new power was rising in the east: Tekish, the Shah of Khorazm. In 1194, the Caliph, al-Nasir, was hard-pressed by the Seljuk Sultan of Isfahan, Tughrul II, and appealed to Khorazmshah Tekish for help, providing the excuse for the Khorazmshah to extend into western Iran. Tughrul II was soon killed, taking the Seljuk Empire with him.

The Seljuks had been the major power in Islam for 150 years, and while their rule had ended, the pattern of rule they brought—Turkish colonization, Turkish annexation of local ruling systems, and a stern orthodoxy—remained and was expanded. The Khorazmshah himself was a product of this: the office was descended from a Turkish slave soldier sent to Khorazm as a governor by the Seljuk Great Sultan Malik-Shah. Continue reading →