Revelations about the C.I.A. practices, which were a radical departure for the United States, set off global denunciations and bitter divisions at home. They led to an eventual ban on the techniques and a prohibition by the American Psychological Association against members’ participation in national security interrogations

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Three-fifths of troops discharged from the military for misconduct in recent years had a diagnosis of post-traumatic stress disorder, traumatic brain injury or another associated condition, according to a report released Tuesday by the Government Accountability Office

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