borders of Ukraine

This article is part of a series dedicated to the establishment of the borders of the Ukrainian SSR (and its legal continuation under the Union Constitution of 5 December 1936 of the Ukrainian SSR) with the neighbouring Soviet republics – the RSFSR, the Belorussian SSR (BSSR) and the Moldavian ASSR (Moldavian Autonomous Socialist Soviet Republic; since 1936 – the Moldavian Autonomous Soviet Socialist Republic) and the latter's legal successor – the Moldavian SSR.

XX century was marked by large population migrations – in the world in general, in Europe, which survived two world wars, and in Ukraine in particular. Unfortunately, these migration processes were accompanied by a large number of refugees. Significant groups of the population have been leaving their usual places of residence semi-voluntarily, as a result of optation.

The article studies the international legal agreements of the period of World War II on exchange of population between Ukrainian SSR as the part of USSR and Nazi Germany, Romania, Poland and Czechoslovakia and their direct implementation.