History of the Peloponnesian War

The convention of the Lacedaemonians and the allies with King Darius and the sons of the king, and with Tissaphernes for a treaty and friendship, as follows:—

1. Neither the Lacedaemonians nor the allies of the Lacedaemonians shall make war against or otherwise injure any country or cities that belong to King Darius or did belong to his father or to his ancestors: neither shall the Lacedaemonians nor the allies of the Lacedaemonians exact tribute from such cities. Neither shall King Darius nor any of the subjects of the king make war against or otherwise injure the Lacedaemonians or their allies.

2. If the Lacedaemonians or their allies should require any assistance from the king, or the king from the Lacedaemonians or their allies, whatever they both agree upon they shall be right in doing.

3. Both shall carry on jointly the war against the Athenians and their allies; and if they make peace, both shall do so jointly.4. The expense of all troops in the king's country, sent for by the king, shall be borne by the king.

5. If any of the states comprised in this convention with the king attack the king's country, the rest shall stop them and aid the king to the best of their power. And if any in the king's country or in the countries under the king's rule attack the country of the Lacedaemonians or their allies, the king shall stop it and help them to the best of his power.