History of the Peloponnesian War

In this strait the Argives, afraid that, as the result of refusing to renew the treaty with Lacedaemon and aspiring to the supremacy in Peloponnese, they would have the Lacedaemonians, Tegeans, Boeotians, and Athenians on their hands all at once, now hastily sent off Eustrophus and Aeson, who seemed the persons most likely to be acceptable, as envoys to Lacedaemon, with the view of making as good a treaty as they could with the Lacedaemonians, upon such terms as could be got, and being left in peace.

Having reached Lacedaemon, their ambassadors proceeded to negotiate the terms of the proposed treaty.