Lysander then put in place a puppet government in Athens with the establishment of the oligarchy of the Thirty Tyrants under Critias which included Theramenes as a leading member.
The puppet government executed a number of citizens and deprived all but a few of their former rights as citizens of Athens.
Many of Athens' former allies were now ruled by boards of ten (decarchy), often reinforced with garrisons under a Spartan commander (called a harmost, meaning "regulator".).
The practice started the period of Spartan hegemony.

After storming and seizing Samos, Lysander returned to Sparta.
Alcibiades, the former Athenian leader, emerged after the Spartan victory at Aegospotami and took refuge in Phrygia, northwestern Asia Minor with Pharnabazus, its Persian satrap.
He sought Persian assistance for the Athenians.
However, the Spartans decided that Alcibiades must be removed and Lysander, with the help of Pharnabazus, arranged the assassination of Alcibiades.

Lysander amassed a huge fortune from his victories against the Athenians and brought the riches home to Sparta.
For centuries the possession of money was illegal in Lacedaemonia, but the newly minted navy required funds and Persia could not be trusted to maintain financial support.
Roman historian Plutarch strongly condemns Lysander's introduction of money; despite being publicly held, he argues its mere presence corrupted rank-and-file Spartans who witnessed their government's newfound value for it.
Corruption quickly followed; while general Gylippus ferried treasure home, he embezzled a great amount and was condemned to death in absentia.
Lysander then put in place a puppet government in Athens with the establishment of the oligarchy of the Thirty Tyrants under Critias which included Theramenes as a leading member. The puppet government executed a number of citizens and deprived all but a few of their former rights as citizens of Athens. Many of Athens' former allies were now ruled by boards of ten (decarchy), often reinforced with garrisons under a Spartan commander (called a harmost, meaning "regulator".). The practice started the period of Spartan hegemony.
After storming and seizing Samos, Lysander returned to Sparta. Alcibiades, the former Athenian leader, emerged after the Spartan victory at Aegospotami and took refuge in Phrygia, northwestern Asia Minor with Pharnabazus, its Persian satrap. He sought Persian assistance for the Athenians. However, the Spartans decided that Alcibiades must be removed and Lysander, with the help of Pharnabazus, arranged the assassination of Alcibiades.
Lysander amassed a huge fortune from his victories against the Athenians and brought the riches home to Sparta. For centuries the possession of money was illegal in Lacedaemonia, but the newly minted navy required funds and Persia could not be trusted to maintain financial support. Roman historian Plutarch strongly condemns Lysander's introduction of money; despite being publicly held, he argues its mere presence corrupted rank-and-file Spartans who witnessed their government's newfound value for it. Corruption quickly followed; while general Gylippus ferried treasure home, he embezzled a great amount and was condemned to death in absentia.
Lysander