Abstract: The Poland problem is a focus of attention in the international political arena of the 20 th century. The First World War hastened the re-construction of Poland and also the boundary disputes between Poland and Soviet Union were derived. The two countries resorted to arms and finally delimited their boundaries with the Treaty of Riga. After the Second World War, Poland perished again and was also reconstructed again. The heads of Soviet Union, America and England delimited the new territory of Poland in the three summits in Teheran, Yalta and Potsdam. The repeated changes of the boundaries between Poland and Soviet Union are closely related to the fates of Ukraine and The Republic of Belarus; also along with the large scale migration of Poland population, the complex relationship between Poland and Russia suffer especially profound influences.
Keywords:Poland; Soviet Union; relationship between Poland and Russia; boundary; population migration