Mughal emperor Akbar acquired the fortress-city of Kandahar through the negotiated surrender of its governor Moẓaffar-Ḥosayn Mirzā, putting a key Indo-Iranian frontier hub under Mughal control and setting up a long-running Safavid–Mughal rivalry over the city.
After Akbar died (October 1605), Safavid forces under the governor of Herat besieged Kandahar, but the Mughal defense held until relief arrived; the failure kept Kandahar in Mughal hands and preserved a tense but functioning diplomatic relationship.
Following Safavid consolidation in the west, Shah Abbas I ordered preparations for an eastern campaign; this decision escalated Safavid–Mughal tensions from diplomatic contestation to open warfare over Kandahar.
Safavid forces under Shah Abbas I took Kandahar during the Mughal–Safavid war, shifting the frontier balance and making Kandahar the central, recurring issue in Safavid–Mughal diplomacy and conflict.
ʿAli-Mardān Khan, the Safavid governor of Kandahar, surrendered the city to Mughal emperor Shah Jahān and entered Mughal service—an episode that recast bilateral relations by turning an internal Safavid political rupture into a major territorial realignment.
The Safavid–Ottoman Treaty of Zuhab ended major war in the west and helped solidify Safavid strategic attention on other frontiers; it formed part of the wider geopolitical context in which the Safavids and Mughals continued to compete over Kandahar.
Shah Abbas II marched east and opened the siege of Mughal-held Kandahar, capitalizing on Mughal distractions in Central Asia; the operation marked a decisive turn from diplomatic maneuver to renewed full-scale frontier war.
Kandahar surrendered to the Safavids, ending the Mughal hold that began with the 1638 handover; this victory became the anchor of Safavid leverage in subsequent negotiations and the trigger for repeated Mughal recovery attempts.
Shah Jahān dispatched Aurangzeb and senior commanders to retake Kandahar; despite field success, the Mughals could not breach the fortifications, demonstrating how siege logistics and artillery constraints shaped Safavid–Mughal military outcomes.
A renewed Mughal effort under Dara Shikoh (with heavy artillery) culminated in abandoning the long siege, effectively ending Mughal attempts to recover Kandahar in this war and leaving the Safavids in lasting control of the frontier stronghold.
The Safavid defeat at Gulnabad weakened the dynasty’s capacity to manage borders and diplomacy, contributing to the broader breakdown of Safavid power that reshaped regional relations—including the strategic environment of the Mughal northwest.
Nadir Shah crushed Mughal forces at Karnal, opening the way to Delhi; the invasion grew out of the post-Safavid Iranian state’s eastern campaigns and underscored how Safavid collapse and successor regimes transformed Indo-Iranian power relations.
Safavid Relations with the Mughal Empire (16th–18th centuries)
