An illustration of Osama bin Laden appears on the cover on the new book, "The Audacious Ascetic: What The Bin Laden Tapes Reveal About Al-Qa'ida."

An illustration of Osama bin Laden appears on the cover on the new book, "The Audacious Ascetic: What The Bin Laden Tapes Reveal About Al-Qa'ida."

Credit:

PRI's The World

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