In 345/44 BC, Nectanebo supported the Phoenician rebellion against the Achaemenid Empire, led by the king of Sidon, Tennes,[21] and dispatched military aid in the form of 4000 Greek mercenaries, led by Mentor of Rhodes.[22] However, having heard of the approach of the forces of Artaxerxes III, Mentor opened communication with the Persians in collusion with Tennes.[22]