The book "Trotskyism: a look through the years" reveals important aspects of the life and work of Leon Trotsky, one of the key figures of the Russian Revolution of 1917. The author tried to give an objective assessment of historical events and determine the importance of what would have been a possible alternative for Trotsky in other circumstances. The book examines Trotsky's political ideas in detail, his relationship with Lenin and other leaders of the Communist Party, and also reveals his fate after being expelled from the Soviet Union. "Trotskyism: a look through the years" is not only a chronological sketch of the life of Leon Trotsky, but also an attempt to analyze his legacy and influence on past and present events. The book will help to understand not only the individual tragedy of the great politician, but also the historical and political processes that changed the face of world history.