The book "Stalin's Secret Agents: Undermining the Roosevelt Government" reveals one of the most important capital secrets of the 20th century - the Soviet Union's attempts to influence the US government during World War II. The author of the book provides a detailed and researched account of how Soviet agents infiltrated Franklin Roosevelt's administration, including the State Department and military structures, in order to influence strategic decisions during and after the war. This book is an important resource for understanding the profound influence that political spies can have on large government structures, and a reminder of the importance of vigilance in the world of intelligence and intrigue.