Oder–Neisse line (German: Oder-Neiße-Grenze; Polish: granica na Odrze i Nysie Łużyckiej) is an unofficial term for the modern border between Germany and Poland. The line generally follows the Oder and Lusatian Neisse rivers, meeting the Baltic Sea in the north. A small portion of Polish territory does fall west of the line, including the cities of Szczecin and Świnoujście (German: Stettin and Swinemünde).
In post-war Poland, the government described the Oder–Neisse line as the result of "tough negotiations" between Polish Communists and Joseph Stalin, leader of the Soviet Union at the time.