Khwarazmian-Nizari War (1227-30)

Khwarazmian-Nizari conflict
Date 1227-1230 Location Alamut, Kumis and Qazvin Result Khwarazmian victory • Execution of Aladdin Muhammad
Belligerents
Nizaris of Alamut	Khwarazmian Empire
Commanders and leaders
Aladdin Muhammad of Ismailid  #	Jalal al-Din Mingburnu Emir Orhan
Strength
Unknown	Unknown
Casualties and losses
Heavy	Unknown

War

Tensions between the Khwarazmians and Nizaris escalated due to territorial ambitions and religious differences.

Alamut and Kumis

Upon the killing of Ganja Governor Orhan, Jalaluddin organized an expedition against the Ismailis in 1227, captured and plundered Alamut and Kumis

Siege of Damghan (1227-1228)

After several months (or, by some accounts, up to a year) the garrison capitulated—reports cite both negotiated safe‑conducts for noncombatants and harsher terms for the fighting men—and the Khwarazmians occupied Damghan in early 1228 AD

Capture of Semnan (1228)

The Nizari garrison in Samnan defended the city with castles and walls. The Khwarezm forces besieged the city and the resistance of the local garrison was broken.

Qazvin and Execution of Alaaddin Muhammad

See also: Battle of Qazvin (1230)

In 1230, in the Battle of Kazvin between the Khwarezm Shahs and the Ismailis, the Ismaili vizier was taken prisoner. During this battle, the Ismaili vizier was captured by the Khwarazmian forces, imprisoned in Dizmar Castle, and executed four months later.