安提柯三世
Cleomenes' reforms had as their aim, the restoration of Spartan power. Initially Cleomenes was successful, taking cities that had until then been part of the Achaean League and winning the financial backing of Egypt. However Aratus, the leader of the Achaean League, decided to ally with Achaea's enemy, Macedonia. With Egypt deciding to cut financial aid Cleomenes decided to risk all on one battle. In the resulting Battle of Sellasia in 222 BC, Cleomenes was defeated by the Achaeans and Macedonia. Antigonus III Doson, the king of Macedon ceremonially entered Sparta with his army, something Sparta had never endured before. The ephors were restored, whilst the kingship was suspended.