Nizārī

Nizārī power in Iran centred on Alamut, a fortress taken by Hasan-i Sabbah in 1090. In 1256 the imam Rukn al-Din Khurshah surrendered it to the Mongols, who dismantled the stronghold and destroyed its library.

Nizari forces briefly recovered Alamut in 1275, though they held it for only a few years. By the fifteenth century the imams had moved to Anjudan in central Iran, where the community underwent a revival under leaders including Mustansir Billah II.