The Pulitzer Prize-winning historian discusses his new biography of the 41st president, Destiny and Power with ABC News "This Week" host and chief anchor George Stephanopoulos.Based on private interviews and extraordinary access to Bush's diaries and to his family, Meacham traces the life of the president. During his single term, Bush managed the end of the Cold War, the reunification of Germany and the expulsion of Iraq from Kuwait. Join us to explore his life and legacy.