The Treaty of Warsaw was a bilateral treaty between the Federal Republic of Germany (FRG) and the People’s Republic of Poland regarding the normalisation of the relationship of these two countries. The treaty was signed on 7 December 1970 in Warsaw by German Chancellor Willy Brandt and Polish Prime Minister Jósef Cyrankiewicz as well as the foreign ministers of West Germany and Poland and was ratified by the German parliament in 1972. In this treaty, the FRG officially recognised the Oder-Neisse-line as Poland’s Western border and guaranteed the inviolability of these borders. The GDR had recognised the border in 1950.