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'World’s most successful spy’ who helped Putin seize power & fed US secrets to Russia for 10 YEARS
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'World’s most successful spy’ who helped Putin seize power & fed US secrets to Russia for 10 YEARS

Evarist Chahali's avatar
Evarist Chahali
Jul 14, 2022
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'World’s most successful spy’ who helped Putin seize power & fed US secrets to Russia for 10 YEARS
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'World’s most successful spy’ who helped Putin seize power & fed US secrets to Russia for 10 YEARS

A DOUBLE agent dubbed "the world's most most successful spy" was instrumental in helping Vladimir Putin seize power - and his identity STILL remains a mystery decades on.

Known simply as "The Fourth Man", the mole was one of several Soviet spies who managed to infiltrate the heart of the US intelligence services.

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