Poland - Stay Brandt in Warsaw. The signing of the agreement on the normalization of relations between Poland and FRG.Polsha - Chronicle: September 1, 1939 - Hitler's attack on Poland, Germany, the beginning of the war. Preparing for signing and signing an agreement between Poland and Germany. Poland - The signing of the agreement between Poland and Germany. Annals of - war, post-war development of Poland GDR - Arrival of the leaders of the Warsaw Pact to a meeting in Berlin. The talks in Berlin.