How did rivalry between the Ottoman Empire and Iran affect the Caucasus?

The rivalry between the Ottoman Empire and Iran (particularly under the Safavid dynasty) transformed the Caucasus into a persistent battlefield and a strategic buffer zone.12

Impact on the Region

• Territorial Conflict: The two powers frequently contested control over the region, leading to significant instability. Armenia, for example, became a primary theater of war, shifting between Ottoman and Persian rule throughout the 16th and 17th centuries.32
• Political Fragmentation: The region was often governed by semi-independent entities, such as the Muslim khanates in eastern Transcaucasia that operated under Persian suzerainty. In mountainous areas like Karabakh, local leaders sometimes exploited these imperial rivalries to maintain brief periods of autonomy.143
• Demographic and Cultural Shifts: The conflict caused major population displacements. For instance, Shah Abbās I forcibly relocated thousands of Armenians to Isfahan to stimulate trade. Additionally, the religious divide—with the Ottomans as a Sunni power and the Safavids promoting Shiʿi Islam—deepened regional cultural and political alignments.324
• Treaty Settlements: The long-standing warfare drained resources from both empires, eventually leading to formal divisions, such as the 1639 Treaty of Qaṣr-e Shīrīn, which partitioned territories like Yerevan and Mesopotamia between the two rivals.2