Basically, it is history's first great lesson on how democratic societies can be manipulated into a state of perpetual war by demagogues and war mongers similar to John Bolton, Donald Trump, and George Dumbya Bush.
The Peloponnesian War
The ancient Greek historian Thucydides called it "a war like no other"—arguably the greatest in the history of the world up to that time. The Peloponnesian War pitted Athens and her allies against a league of city-states headed by Sparta. Thucydides himself was an Athenian general in the fighting, sentenced to exile partway through the 27-year struggle, after losing a key battle to one of Sparta's leading commanders.
Although Thucydides lived to see the end of the war, his history breaks off in its 21st year. Other ancient writers completed the record but without Thucydides's sense of drama and matchless insight—for he is the first historian to seek the true causes of events. His eyewitness account of the war has been a classic for 24 centuries and is still studied for its profound truths about the nature of human strife.
One of the surprising aspects of the Peloponnesian War is that it sparks lively scholarly debate even today. For example, what was the true nature of Sparta's notoriously closed society? Was it, at bottom, alien to our Western values—as some historians now believe? Or did Sparta partake of a common Greek culture that made it more similar than dissimilar to Athens?
War debate at Athens and Sparta:
Thucydides records speeches that took place in citizen assemblies as war fever took hold—and cooler heads were ignored. These make a gripping narrative, comparable to the drama that led to the outbreak of World War I.
Citizens Deciding Their Own Fates
Unlike earlier great wars, the Peloponnesian War was not a conflict between kings but between citizens from different city-states, who shared the same language, gods, oracles, and festivals such as the Olympic Games. Citizen assemblies decided questions of war and peace—literally voting on their own fates, since they were the ones who had to do the fighting.
One of the major themes of the course is that as the war progressed, stasis erupted in city after city. The term stasis comes from the Greek word for standing and means faction-driven sedition or civil war. In the murderous stasis that overtook the island of Corcyra, Thucydides noted, "To fit in with the change of events, words, too, had to change their usual meanings. What used to be described as a thoughtless act of aggression was now regarded as the courage one would expect to find in a party member."
Ironically, the Peloponnesian War was fought against the backdrop of Greece's Golden Age, epitomized by Athens and its astonishing innovations in government, architecture, oratory, philosophy, and the dramatic arts. One of the most remarkable aspects of this era is that culture flourished side-by-side with the politics of war—that even as Athenian citizens were honoring Aristophanes's mocking antiwar play The Acharnians by giving it first prize in a drama competition, they were debating with equal ardor whether to continue the war, and deciding overwhelmingly to do so.
source credit: Professor Kenneth W. Harl, Tulane University