Russian occupation of Tabriz

The Russian occupation of Tabriz was a military occupation by the Russian Empire that lasted from 30 April 1909 to 28 February 1918, with a brief interruption from 6 to 31 January 1915. The occupation occurred during the Persian Constitutional Revolution and the subsequent years of World War I. At the time, Tabriz was the second-largest city of Qajar Iran, serving as the capital of the Azerbaijan region and the traditional seat of the Qajar Crown Prince.

Source: Wikipedia — Russian occupation of Tabriz (CC BY-SA 4.0)