The King's Peace (387 BC) was a peace treaty guaranteed by the Persian King Artaxerxes II that ended the Corinthian War in ancient Greece. The treaty is also known as the Peace of Antalcidas, after Antalcidas, the Spartan diplomat who traveled to Susa to negotiate the terms of the treaty with the king of Achaemenid Persia. The treaty was more commonly known in antiquity, however, as the King's Peace, a name that reflects the depth of Persian influence in the treaty, as Persian gold had driven the preceding war. The treaty was a form of Common Peace, similar to the Thirty Years' Peace which ended the First Peloponnesian War.