History of the Peloponnesian War

After this the Chians were besieged both by sea and land more narrowly, and great famine was in the city. Pisander, and the other Athenian ambassadors that went with him, when they came to Tissaphernes, began to confer about the agreement.

But Alcibiades (for he was not sure of Tissaphernes, because he stood in fear too much of the Peloponnesians, and had a purpose besides, as Alcibiades himself had taught him, to weaken both sides [yet more]), betook himself to this shift: that Tissaphernes should break off the treaty by making to the Athenians exorbitant demands.