On 20 April, in response to the siege situation, Britain, France and Russia agreed that a Russian force should be sent to occupy the city in order "to facilitate the entrance into the town of the necessary provisions, to protect the consulates and foreign subjects, and to help those who so desired to leave the town.
[1] There were several demands, but most important was to fire the newly employed American lawyer Morgan Shuster.
In response, a brigade of the Imperial Russian Army was dispatched to Tabriz under General Voropanov.
[2][3] During the Russian occupation, Crown Prince Mohammad Hassan Mirza resided in Tabriz.
The Ottomans were decisively defeated in the Battle of Sarikamish and the Russians were able to reoccupy the city on 31 January 1915.
They remained in control until the Russian Revolution of November 1917 created disorder and confusion among the troops.
The evacuation began in early 1918 and on 28 February the last Russian soldiers left Tabriz.