Duane "Dewey" Clarridge, a CIA veteran, speaks in May 2007 during an Arkansas Committee on Foreign Relations luncheon in Little Rock, Ark. The retired spy criticized the CIA's leadership and said a lack of human intelligence had led to mistakes in Iraq, Iran and North Korea. Mike Wintroath/AP hide caption

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Iran-Contra special prosecutor Lawrence Walsh speaks to reporters in 1989. Rick Bowmer/AP hide caption

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Lawrence Walsh, Who Investigated Iran-Contra Scandal, Dies At 102
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