Sweden Finland. There are several connections from the Stockholm area across the Sea of Åland to Mariehamn in the Åland Islands as well as Turku and Helsinki on the Finnish mainland and beyond to Estonia and St Petersburg in Russia. Ferry routes from the Stockholm area also connect with Ventspils and Riga in Latvia as well as Gdańsk in Poland across the Baltic Sea. The ferry ports of Karlskrona and Karlshamn in southeastern Sweden serve Gdynia, Poland, and Klaipeda, Lithuania. Ystad and Trelleborg near the southern tip of Sweden have ferry links with the Danish island of Bornholm and the German
Poland–Russia border Soviet Union (USSR), shaped during the Polish-Soviet War, and confirmed at the Treaty of Riga at the line Dzisna-Dokshytsy-Słucz-Korets-Ostroh-Zbrucz. That border was long. Following World War II, the new border (see territorial changes of Poland immediately after World War II) was drawn between the People's Republic of Poland and the USSR. The new Polish-Soviet border was long at first, and subject to a minor modification in the 1951 Polish–Soviet territorial exchange, which reduced the border length to . The modern border between Poland and Russia is regulated by a number of legal documents, many of them dating to the times