Remarkably, four of the five Athenian teams actually attacked Syracuse on Sicily’s east coast! As they were all aware that such a course had led to an Athenian disaster 2,500 years before, I queried them about their decision. Their replies were the same: Each had noted that the Persians were stirring, which meant there was a growing threat to Athens’ supply of wheat from the Black Sea. As there was an abundance of wheat near Syracuse, each Athenian team decided to secure it as a second food source (and simultaneously deny it to Sparta and its allies) in the event the wheat from the Black Sea was lost to them. Along the way, two of the teams secured Pylos so as to raise helot revolts that would damage the Spartan breadbasket. Two of the teams also ended revolts in Corcyra, which secured that island’s fleet for Athenian purposes, and had the practical effect of blockading Corinth. So, it turns out there were a number of good strategic reasons for Athens to attack Syracuse. Who knew? Certainly not any War College graduate over the past few decades.

Story of Alcibiades

http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Plutarch/Lives/Alcibiades*.html

What did Plutarch have to say about him.

“…He had, as they say, one power which transcended all others, and proved an implement of his chase for men: that of assimilating and adapting himself to the pursuits and lives of others, thereby assuming more violent changes than the chameleon. That animal, however, as it is said, is utterly unable to assume one colour, namely, white; but Alcibiades could associate with good and bad alike, and found naught that he could not imitate and practice. 5 In Sparta, he was all for bodily training, simplicity of life, and severity of countenance; in Ionia, for p65 luxurious ease and pleasure; in Thrace, for drinking deep; in Thessaly, for riding hard; and when he was thrown with Tissaphernes the satrap, he outdid even Persian magnificence in his pomp and lavishness. It was not that he could so easily pass entirely from one manner of man to another, nor that he actually underwent in every case a change in his real character; but when he saw that his natural manners were likely to be annoying to his associates, he was quick to assume any counterfeit exterior which might in each case be suitable for them…”

http://www.ancient.eu.com/Alcibiades/

One thing not widely known is King Agis of Sparta hated Alcibiades because Alcibiades had a child by the Kings wife.

I have a theory that the period of time for the downfall of Empires is related to how long it takes psychopaths to move up the ladder of leadership. If a way is not found to restrain them the country disintegrates.