Ex-CIA chief Gen. David Petraeus and ousted Lockheed Martin executive Christopher Kubasik are just the latest in a long line of leaders to be laid low by their libidos, writes Jeffrey Pfeffer. That's in part a side effect of the narcissistic, aggressively egotistical traits we prize -- often with good reason -- in top executives, Pfeffer writes. "[W]e are choosing more narcissistic leaders and the misbehavior is not just the consequence of power but also of excessive narcissism," he writes.

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