The Berlin Agreement (effective June 1972), signed by the United States, Britain, France, and the Soviet Union, protected trade and travel relations between West Berlin and West Germany and aimed at improving communications between East Berlin and West Berlin.
O Acordo de Berlín (efectivo en xuño de 1972), asinado por Estados Unidos, Reino Unido, Francia e a Unión Soviética, protexía o comercio e as viaxes entre Berlín Oeste e o resto da RFA e animaba a aumentar as comunicacións entre Berlín Leste e Berlín Oeste.