History of the Peloponnesian War

They also sent envoys to Corinth and Lacedaemon to procure a force of allies to join them, and to induce the Lacedaemonians for their sakes openly to address themselves in real earnest to the war against the Athenians, that they might either have to leave Sicily or be less able to send reinforcements to their army there.

The Athenian forces at Catana now at once sailed against Messina, in the expectation of its being betrayed to them. The intrigue, however, after all came to nothing: Alcibiades, who was in the secret, when he left his command upon the summons from home, foreseeing that he would be outlawed, gave information of the plot to the friends of the Syracusans in Messina, who had at once put to death its authors, and now rose in arms against the opposite faction with those of their way of thinking, and succeeded in preventing the admission of the Athenians.