Treaty of Tartu (Finland–Russia)

The Treaty of Tartu (Russian: Тартуский мирный договор; Finnish: Tarton rauha; Swedish: Fredsfördraget i Dorpat) was signed on 14 October 1920 between Finland and Soviet Russia after negotiations that lasted nearly five months. The treaty confirmed the border between Finland and Soviet Russia after the Finnish Civil War and Finnish volunteer expeditions in Russian East Karelia that resulted in annexation of several Russian districts.

Source: Wikipedia — Treaty of Tartu (Finland–Russia) (CC BY-SA 4.0)