J.R.R. Tolkien's "Lord of the Rings" has captivated millions on thebig screen because it is an archetypal tale of power and human nature. Thecorrupting influence of power, its overwhelming temptation even to those whoseintentions are good, the dilemmas encountered in opposing evil -- these issuesare played out every day here in Washington, the center of the most concentratedpower on Earth.