The book "History of the Peloponnesian War" is the second part of the famous work of the ancient Greek historian Thucydides. In this book, the author talks about the events of the following years of the war between the Athenian Union and the Spartan Union. Thucydides goes on to meticulously describe the strategic campaigns, battles, and diplomatic maneuvers that took place during this period of Greek history. The author draws attention to internal political conflicts, causes and consequences of various events and actions of the main figures of that time. "The History of the Peloponnesian War" is considered one of the most important works of the culture of Ancient Greece, which helps modern readers to better understand the complex relations and events of the past.