Richard Sorge and the Cambridge Five: The History of the Soviet Union's Most Important Foreign Spies during World War II

Soviet Russia followed a philosophy demanding international, global revolution - which, in practice, often resembled conquest by any means available, direct or indirect. While the Soviets never hesitated to use naked force when it seemed advisable, or when compelled to it by outside attack, they made intensive use of covert operations - spying, assassination, bribery, infiltration of governments and educational systems, the deployment of agents provocateur and “agitprop” - in an effort to w...