 After this success, Conon felt it was safe for him to return to Athens.Pharnabazus allowed him to retain part of the fleet, and supplied money for the fortification of Piraeus and the reconstruction of the long walls joining it to Athens.These actions meant that some of the main results of the Peloponnesian War were undone - Athens regained her position as a major power in Greece, and though she had still lost her empire, Sparta had been prevented from taking it over.