Rudolf Nadolny

Rudolf Nadolny (12 July 1873 – 18 May 1953) was a military intelligence officer under German Foreign Office cover. During the First World War, he worked in a branch of the German General Staff that experimented in biological warfare. He was the German Ambassador to Turkey (1924-1933) and the Soviet Union (1933-1934) and the head of the German delegation at the World Disarmament Conference (1932-1933). He sought to pursue close relations between the Weimar Republic and the Soviet Union. Nadolny left the diplomatic service in opposition to Hitler's policy towards the Soviets. Provided by Wikipedia