Agreement between Sparta and Athens in 446, which ended the First *Peloponnesian War after c.15 years. Its exact terms are unknown but by it Athens (after a recent defeat in *Boeotia, see coronea, battle of) abandoned its recent land acquisitions (Nisaea, Pegae, *Troezen, *Achaea), including and especially Boeotia, effectively in return for a free hand on revolted *Euboea (Thuc. 1. 115. 1). Armed attacks were renounced if the other side was prepared to go to *arbitration (Thuc. 1. 78. 4, 140. 2, 144. 2, 145; 7. 18). There was possibly a general clause stipulating *autonomy; at least, the Aeginetans (see aegina) complain (Thuc. 1. 67) that theirs has been infringed, though this may be a reference to a special guarantee to Aegina. *Argos(1) and other cities not included in the treaty could join whichever side they liked (Thuc. 1. 35; Paus. 5. 23. 4 for Argos). NB there was no general clause of 446 recognizing possessions as they then stood, i.