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Chris Wallace, Anchor of Fox News Sunday joins Bob Sirott to talk about his new best-selling book: Countdown 1945: The Extraordinary Story of the 116 Days that Changed the World.  In the book, Wallace delivers a behind-the-scenes account of the secret meetings and events across the globe during the 116 days leading up to the world’s first use of the atomic bomb in wartime—the American attack on Hiroshima on August 6, 1945. This August marks the 75th anniversary of the bombing. Plus, he talks about politely interrupting on-air guests, and life at Fox News.