But, on the death of Antigonus, the Achaeans even made an alliance with the Aetolians and supported them ungrudgingly in the war against Demetrius, so that, for the time at least, their estrangement and hostility ceased, and a more or less friendly and sociable feeling sprang up between them.
Demetrius only reigned for ten years, his death taking place at the time the Romans first crossed to <a class="linkToPlace" target="_blank" href="/place?placename=Illyria&groupId=647&placeId=1186">Illyria</a>, and after this the tide of events seemed to flow for a time in favour of the Achaeans\' constant purpose;
for the Peloponnesian tyrants were much cast down by the death of Demetrius, who had been, so to speak, their furnisher and paymaster, and equally so by the threatening attitude of Aratus, who demanded that they should depose themselves, offering abundance of gifts and honours to those who consented to do so, and menacing those who turned a deaf ear to him with still more abundant chastisement on the part of the Achaeans.
They therefore hurried to accede to his demand, laying down their tyrannies, setting their respective cities free,
and joining the Achaean League. Lydiades of <a class="linkToPlace" target="_blank" href="/place?placename=Megalopolis&groupId=745&placeId=1360">Megalopolis</a> had even foreseen what was likely to happen, and with great wisdom and good sense had forestalled the death of Demetrius and of his own free will laid down his tyranny and adhered to the national government.
Afterwards Aristomachus, tyrant of <a class="linkToPlace" target="_blank" href="/place?placename=Argos&groupId=361&placeId=689">Argos</a>, Xenon, tyrant of <a class="linkToPlace" target="_blank" href="/place?placename=Hermione&groupId=629&placeId=1159">Hermione</a>, and Cleonymus, tyrant of Phlius, also resigned and joined the democratic Achaean League.
Walbank Commentary