“Letter to Walter Ulbricht, January 7, 1964. Russell would later write, in his autobiography: "The abduction and imprisonment by the East Germans of Brandt, who had survived Hitler's concentration camps, seemed to me so inhuman that I was obliged to return to the East German Government the Carl von Ossietzky medal which it had awarded me. I was impressed by the speed with which Brandt was soon released".”

Source: Wikiquote