For the first time in Russian history, a new view is presented on the tragic events of the 1930s associated with the conspiracy of the USSR military circles led by Tukhachevsky. The role of the British intelligence services and their influence on political processes in the USSR is highlighted, many personalities from both the Western and Soviet sides are analyzed, including the names of specific agents of both sides who participated in exposing the conspiracy that became the prologue to the Munich agreement between the West and Hitler and put an end to beginning of World War II. Particular importance is attached to the analysis of the consistent anti-Russian position of England, which has centuries-old roots.