What Led an Award Winning Journalist to Write an Eight Thousand Word Piece for Vanity Fair?

Peter Bergen: What led an award winning journalist to not just write an eight thousand word piece for vanity fair, but what led you to write an entire book on this? "There was so much material that i just couldn't get to in the vanity fair piece," Bergen says. The next day he commenced writing the book and it was published in february. He talks about how his cousin helped him develop a six-a-sentenal thiphone detector.