Who were the allies of Persia?

The primary allies of Persia, particularly during its imperial height in the Achaemenid period, included various city-states and regions such as the Medes, Lydians, and Egyptians. Additionally, the Persian Empire often formed alliances through marriage and diplomacy with local rulers and tribes across its vast territories. In later conflicts, notably during the Greco-Persian Wars, Persia sought alliances with other states, but these were often less stable and more opportunistic. Overall, Persia's alliances were characterized by a mix of military cooperation and strategic diplomacy.