The Peace of Riga, also known as the Treaty of Riga (Polish: Traktat Ryski), was signed in Riga on 18 March 1921, among Poland, Soviet Russia (acting also on behalf of Soviet Belarus) and Soviet Ukraine. The treaty ended the Polish–Soviet War.The Soviet-Polish borders established by the treaty remained in force until World War II. They were later redrawn during the Tehran Conference, Yalta Conference and Potsdam Conference.