History of the Peloponnesian War

In the spring following, the Argives, when they saw that the ambassadors which the Boeotians promised to send unto them came not, and that Panactum was razed, and that also there was a private league made between the Boeotians and the Lacedaemonians, were afraid lest they should on all hands be abandoned, and that the confederates would all go to the Lacedaemonians.

For they apprehended that the Boeotians had been induced both to raze Panactum and also to enter into the Athenian peace by the Lacedaemonians; and that the Athenians were privy to the same, so that now they had no means to make league with the Athenians neither; whereas before they made account that if their truce with the Lacedaemonians continued not, they might upon these differences have joined themselves to the Athenians.