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"Former C.I.A. officers differ on the impact of Mr. Novaks identification of Ms. Wilson, who had been working against weapons proliferation in Europe and elsewhere while posing as an analyst for a shell company in Boston, Brewster Jennings & Associates, set up by the agency. Clandestine service officers working under such "nonofficial cover" — rather than the traditional guise of diplomat — are considered to hold the most sensitive and vulnerable jobs in intelligence, lacking the protection of diplomatic immunity if they are unmasked overseas."
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Valerie Plame