Gentlemen Do Read Each Other’s Mail

I. COMINT in the post-war era

II. British 1920 Official Secrets Act

III. Government Code and Cipher School (GC&CS)

Russian Revolution, Civil War, and Aftermath

I. Lenin’s “Decree on Peace”

II. Leon Trotsky

III. Treaty of Brest-Litovsk

IV. Allied Response

V. Intelligence Shortage

VI. Lockhart Mission and its shortcomings

VII. Alternative Sources

A. Allied Subjects in Russia

B. “The Mission”

C. Sidney Reilly

VIII. The “Lockhart Plot”

IX. “The Trust”

British Codebreaking and Soviet Subversion

I. New Economic Policy (NEP)

II. Anglo-Soviet Trade Negotiations, 1920-1

III. Comintern

IV. Lloyd George’s Pragmatism

V. Zinoviev Letter