The Spartans kept their word and went to war with the Athenians. The Athenians and the Spartans both believed they had war-winning strategies. Although the Athenians focused heavily on the Spartan’s strategy, the Spartans eventually ended up winning the war, with the Athenians taking a devastating loss.The Spartans had many advantages against Athens including the plague of Athens, the betrayal of Alcibiades, and the many huge losses for the Athenians. A huge factor in the Spartans winning the war was Pericles's nephew, Alcibiades. After Nicias negotiated the Peace of Nicias to keep the peace for about 50 years, a second war was started after six years of the fifty-year truce because of Alcibiades. After giving bad strategical advice to the Athenians to invade the island of Sicily, when it failed, Alcibiades was to be put on trial. Alcibiades left for Sparta instead of staying for the trial. Alcibiades gave the Spartans advice on how to defeat the Athenians. Alcibiades suggested that the Spartans get help from the