The Order of Assassins or simply the Assassins were a Nizari Isma'ili order that existed between 1090 and 1275 AD, founded by Hasan-i Sabbah.
Alamut is a mountain fortress at an altitude of 2163 meters at the central Alborz, in the Iranian stanza of Qazvin, about 100 kilometers from Tehran. In 1090 AD, the Alamut Castle, a mountain fortress in present-day Iran, came into the possession of Hassan-i Sabbah, a champion of the Nizari Ismaili cause. Until 1256, Alamut functioned as the headquarters of the Nizari Ismaili state, which included a series of strategic strongholds scattered throughout Persia and Syria, with each stronghold being surrounded by swathes of hostile territory.
Hasan-i Sabbah, also known as Hasan I of Alamut, was a religious and military leader, founder of the Nizari Ismai'li sect widely known as the Hashshashin or the Order of Assassins, as well as the Nizari Ismaili state, ruling from 1090 to 1124 AD.
Rashid al-Din Sinan also known as the Old Man of the Mountain, was an Arab Muslim missionary who served as the leader of the Nizari Ismaili state and the Order of Assassins from 1162 until his death in 1193. An adherent of Nizari Ismailism, a branch of Shia Islam, he was a prominent figure during the Crusades.
Gerdkuh was a castle of the Nizari Isma'ili state located near Damghan in the region of Qumis.
Alamut or Rudbar is a region in Iran including western and eastern parts on the western edge of the Alborz (Elburz) range, between the dry and barren plain of Qazvin in the south and the densely forested slopes of the Mazandaran province in the north. Starting from Qazvin toward Alamut, passing through the first range of hills, curvatures, forms, are significant themes in nature's composition of this area. The famous Ismaili castle of Alamut and numerous others are in this area, which served as the heartland of the state founded by Hassan-i Sabbah.
Rukn al-Dīn al-Hasan ibn Muhammad Khurshāh (1230–1256) was the son of ‘Alā’ ad-Dīn Muḥammad III and the 27th Isma'ili Imam. He was also the fifth and final Nizari Isma'ili Imam who ruled at Alamut. The Imam was the eldest son of Imam ʿAla al-Din Muhammad and succeeded his murdered father to the Imamate in 1255. Imam Rukn al-Din engaged in a long series of negotiations with the invading Mongols, and under whose leadership Alamut Castle was surrendered to the Mongol Empire marking the end of the Nizari state in Persia.
The Nizari state was a Nizari Isma'ili Shia state founded by Hassan-i Sabbah after he took control of the Alamut Castle in 1090 AD, which marked the beginning of an era of Ismailism known as the "Alamut period". Their people were also known as the Assassins or Hashashins.
Nūr al-Dīn Muḥammad II or ʾAʿlā Muḥammad was the Nizari Isma'ili Imām of Alamūt who reigned the longest period out of any lord (Khudawand) of Alamut, forty-four years. He affirmed the policies of his father, Hassan Ala Dhikrihi's Salam, who had been stabbed to death a year after proclaiming Qiyāma, or Resurrection.
ʿAlāʾ ad-Dīn Muḥammad III, more commonly known as ʿAlāʾ ad-Dīn (علاءالدین), son of Jalāl al-Dīn Ḥasan III, was the 26th Nizāri Isma'ilism Imām. He ruled the Nizari Ismaili state from 1221 to 1255. By some accounts, he was considered a respected scholar and the spiritual and worldly leader of the Nizari Ismailis. The intellectual life of Persia has been described as having flourished during his 34-year reign. Allegedly, he was known for his tolerance and pluralism. His reign witnessed the beginnings of the Mongol conquests of Persia and the eastern Muslim world. He was assassinated by an unknown perpetrator on 1 December 1255, and was succeeded by his eldest son, Rukn al-Din Khurshah, in 1255.
Shams al-Din Muhammad was the 28th imam of the Nizari Isma'ili community. Little is known about his life. He was the first imam to rule after the destruction of the Nizari state by the Mongol Empire, and spent his life hiding his true identity.
Dizkuh or Shahdiz (شاهدز) was a fortress near Isfahan, Iran, notably held by the Nizari Ismailis. It was captured and destroyed in Seljuk sultan Muhammad Tapar's anti-Nizari campaign. Its conspicuous, picturesque ruins lie about 8 km south of Isfahan on a subpeak of Mount Soffeh.
By the late 11th century, the Shi'a sub-sect of Ismailism had found many adherents in Persia, although the region was occupied by the Sunni Seljuk Empire. The hostile tendencies of the Abbasid–Seljuk order triggered a revolt by Ismailis in Persia under Hassan-i Sabbah.
Maymūn-Diz was a major fortress of the Nizari Ismailis of the Alamut Period described in historical records. It has been variously identified with the Alamut Castle, Navizar Shah Castle, Shirkuh Castle, Shahrak Castle, and Shams Kalayeh Cave. Recently, Enayatollah Majidi located it on top of Mount Shatan near Khoshk Chal.
The Mongol campaign against the Nizaris of the Alamut period began in 1253 after the Mongol invasion of the Khwarazmian Empire and a series of Nizari–Mongol conflicts. The campaign was ordered by the Great Khan Möngke and was led by his brother, Hülegü. The campaign against the Nizaris and later the Abbasid Caliphate was intended to establish a new khanate in the region—the Ilkhanate.
Ghal'eh Kuh of Ferdows is a ruined fortress on top of Kuh-e Ghal'eh, located south of Ferdows (Tun) in South Khorasan Province, Iran. The fortress was famously used by the Nizari Ismailis of the Alamut period, and was the biggest Nizari stronghold in the Quhistan region, according to the Tarikh-i Jahangushay.
Qal'eh Dokhtar, Ferdows, also the Ghal'eh Kuh of Hasanabad, is a small ruined fortress located north west of Ferdows (Tun) and near the village Hasanabad in South Khorasan Province, Iran. The fortress was used by the Nizari Ismailis of the Alamut period.
The siege of Maymun-Diz, an unlocated fortress and the stronghold of the leader of the Nizari Ismaili state, Imam Rukn al-Din Khurshah, occurred in 1256, during the Mongol campaign against the Nizaris led by Hülegü.
