Dan Raviv covered the world for CBS News for over 40 years, ending that part of his career with 25 years in Washington DC. He also co-authored a national best seller, "Every Spy a Prince," and later an updated history of Israeli intelligence, "Spies Against Armageddon: Inside Israel's Secret Wars." He also wrote a book about the Marvel Comics bankruptcy, "Comic Wars," and co-authored a book about human motivation, "The Quest for Significance."