Photo Gallery: NATO's 'Most Damaging' Spy
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Photo Gallery: NATO's 'Most Damaging' Spy

Foto: Sicherheitspolizei Estland

Betrayer and Betrayed New Documents Reveal Truth on NATO's 'Most Damaging' Spy

For years, from his senior position in Estonia's Defense Ministry, Herman Simm leaked highly sensitive NATO intelligence and the names of Western spies to Russia's foreign intelligence service. In a classified damage analysis, NATO concludes that the former KGB colonel was one of the "most damaging" spies in the history of the alliance.