Chremonidean War

…the liberation of Greece (the Chremonidean War, 267–261). Although the Egyptian fleet had blockaded the Saronic Gulf, Antigonus defeated Areus near Corinth in 265 and then besieged Athens. In 263–262 the city capitulated. Athenian officials were replaced by Antigonus’ appointees, and Athens became no more than a Macedonian provincial city.

…the rival kingdoms, the so-called Chremonidean War (268?–261), stirred up by Ptolemy against Antigonus II Gonatas, king of Macedonia, resulted in the weakening of Ptolemaic influence in the Aegean and brought about near disaster to Ptolemy’s allies Athens and Sparta. Ptolemy was no more successful in the Second Syrian War…