History of the Peloponnesian War

After this, when Athenian reinforcements arrived, consisting of one thousand hoplites and three hundred cavalry, under the command of Laches and Nicostratus, the Argives—for they shrunk in spite of all from breaking off the truce with the Lacedaemonians—bade them go away, and would not comply with their wish to be brought before the people for negotiations, until the Mantineans and Eleans, who were still present, constrained them by their entreaties to do so.

The Athenians, then, through Alcibiades, who was present as ambassador, protested before the Argives and their allies that it was not right even to have made the truce without the consent of the rest of the allies, and now, since they themselves were present opportunely, they ought to resume the war.