A more informed and intensive account than the Cockridge- The Net That Covers The World (Holt- page 400), Dallin follows the development of Russia's post-1917 espionage system, steers clear of sensationalism, and seizes upon the inner workings of Soviet spy rings. These consist of the philosophy, training and emotional make-up of agents; the ingenious ""apparats"" they found; the commercial and diplomatic channels they use; their tie-ups with political sympathizers and often with industrialists seeking to curry favor with the Kremlin. Above all, the author communicates the Russian concept of espionage, which may only be called a governmental branch, as formally established and replete with protocol as the Foreign Office. A massed array of facts and details reveal the private ethical code to which the Russian spy adheres, his methods and occasions for using brute force and conspiracy, his seduction of potential subversives, his personal idiosyncrasies and intellectual beliefs. The full effectiveness of these agents may be seen in the fact that their disclosures directly caused ""the Soviet-Japanese pact of 1941, the Stailngrad victory, the attitude toward the atom-boming of Hiroshima, and the present-day controversies within the United Nations over atomic weapons"". Just as in his previous titles- Soviet Russia's Foreign Policy and the co-authored Forced Labor in Soviet Russia, the present document is cogent, scholarly and definitive, and should find a market among those concerned with the political reality and the threat of Communist expansion.