The Peloponnesian War was a war of the century in the Greek world that lasted for 27 years. The war, like a great storm, swept across the Greek peninsula, engulfing countless city-states. The origins of the war can be traced back to 431 BC, when the conflict between Athens and Sparta, the two most powerful Greek city-states, intensified. 
The name of the war was not arbitrary, it was named after the main forces involved in the war - all the city-states in the Peloponnese led by Sparta on the one hand, and all the city-states on the Attica Peninsula led by Athens on the other. These two forces on the Greek peninsula are like two huge whirlwinds, colliding with each other and rolling up patches of dust. 
The cause of the war, it seems, was the rise of Athens that threatened Sparta's hegemony. Research shows that as Athens prospered, Sparta felt unprecedented pressure. Fearing that the development of Athens would pose a threat to its position, Sparta decided to launch a preemptive attack on the rising Athens. 
But in fact, the hidden reasons behind this war are not so simple. In the war, both sides showed superb military talents and various strategies and tactics. Whether it's the army, navy, or espionage, it can be said that everything is used. Each side tries to upset the balance and achieve a decisive advantage. The brutality of war is deeply imprinted in the hearts of everyone involved.
And the impact of this war is even more far-reaching. Countless cities have been destroyed in this war, and people are living in dire straits. Life was devastated, fields were barren, and the entire Greek peninsula was plunged into depression. In addition, the war also led to the decline of Greece and the rise of Sparta. The wheels of history are turning, but the smoke of war has not dissipated for a long time. The Peloponnesian War, a Greek war of the century, had an impact far beyond what people could have imagined.
Whether from the perspective of historical development or from the height of modern understanding, we can clearly see that this war, which lasted for 27 years, has had a profound impact on Greece and the entire Mediterranean world, allowing us to fully appreciate the tremendous destructive effect of war and its cruelty and tragedy, so that we can love and cherish peace even more.