In the years that he served Sparta , Alcibiades played a significant role in Athens ' undoing ; the capture of Decelea and the revolts of several critical Athenian subjects occurred either at his suggestion or under his supervision .
In the years that he served Sparta , Alcibiades played a role in Athens ' undoing ; the capture of Decelea and the revolts of several critical Athenian subjects occurred either at his suggestion or under his supervision .