discovered his espionage activities. Postwar In June 1948, at the Nuremberg Trials, Kordt testified on behalf of Ernst von Weizsäcker, State Secretary of the Foreign Ministry of Nazi Germany, and later German ambassador to the Vatican. Weizsäcker was on trial for his role in Hitler's aggressive foreign policy. Partly as a result of Kordt's testimony, Weizsäcker was acquitted. This allegedly aroused the hostility of Federal Chancellor Konrad Adenauer, who blocked Kordt's return to a career at the Foreign Office. From 1951, Kordt was a professor of international law at the University of Cologne. See also Assassination attempts on Adolf Hitler German resistance members German spies for the Soviet Union 1903 births 1969 deaths German diplomats German Rhodes Scholars Failed assassins of Adolf Hitler Nazi Party members SS officers