The repatriations were agreed to in the Yalta Conference ; Stalin claimed the repatriated people were Soviet citizens as of 1939 , although many of them had left Russia before or soon after the end of the Russian Civil War or had been born abroad . Most of those Cossacks and Russians fought the Allies , specifically the Soviets , in service to the Axis powers , specifically Germany , yet the repatriations included non-combatant civilians as well
Yalta Conference
Yalta Conference
Repatriation of Cossacks after World War II