Antigonus III Doson
Aratus took advantage of this incident, and began plotting against Cleomenes with King Antigonus III Doson of Macedon. Previously, in 227 BC, two ambassadors from Megalopolis had been sent to Macedon to request help. Antigonus showed little interest at the time, and these efforts failed. Aratus wanted the Macedonian king to come to the Peloponnese and defeat Cleomenes, but Antigonus asked for control of Acrocorinth in return. This was a sacrifice that the League was not willing to make, however, and they declined to seek help from Macedon.