>>5792666 lb
"Russians in Iran (Persia) have a long history dating back many centuries.[3][4] However, the first mass-immigration of Russians into Iran occurred in the early 20th century when hundreds of thousands of White émigrés had to flee from the Bolsheviks. Most of them landed in the north Iranian provinces of Gilan and Mazandaran, but also in the northwest and northeast, in Iranian Azerbaijan and Khorasan, where communities of their descendants still live.[5][6]
The Russian community kept increasing in the northern provinces of the country, as a result of the Russian sphere of influence which was established since the Russo-Persian War of 1826-28.[7][8] This influence ended some decades later with the crisis of 1946. "
https://en.wikipedia.org/wiki/Russians_in_Iran