Key Facts
- Duration
- 1837–1838 (approx. 1 year)
- Attacker
- Qajar Iran under Mohammad Shah Qajar
- Defender
- Principality of Herat under Kamran Shah
- European powers involved
- 4 (British and Russian agents)
- Outcome
- Siege lifted; no territorial change
Strategic Narrative Overview
Iranian forces besieged Herat, which was defended by Kamran Shah and his vizier Yar Mohammad Khan Alakozai. British agent Eldred Pottinger assisted the city's defenses, while Russian Count Simonich and Polish agent Jan Prosper Witkiewicz backed the Iranian side. Sher Mohammad Khan Hazara organized a Sunni confederacy of Aimaq, Turkmen, and Uzbek tribes that helped sustain resistance against the besieging army.
01 / The Origins
During the Great Game, Qajar Iran sought to extend its influence eastward by capturing Herat, a strategically vital city on the route to Central Asia and India. Mohammad Shah Qajar launched the campaign with Russian diplomatic encouragement, while Britain feared that Persian expansion would open a pathway for Russian influence toward British India, making Herat a flashpoint in Anglo-Russian rivalry.
03 / The Outcome
The siege ended inconclusively after neither side achieved a decisive military result. British diplomatic pressure, including threats of military intervention, and the withdrawal of Russian support compelled Mohammad Shah Qajar to abandon the siege and withdraw Iranian forces. Herat remained under Kamran Shah's control, and the episode deepened Anglo-Persian tensions that would later resurface in the Anglo-Persian War.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Mohammad Shah Qajar, Count Simonich, Jan Prosper Witkiewicz.
Side B
1 belligerent
Kamran Shah, Yar Mohammad Khan Alakozai, Eldred Pottinger.
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.