KGB papers, kept in secret since 1992, released by British archive

Original documents from one of the biggest intelligence leaks in history — a who’s who of Soviet spying — were released Monday after being held in secret for two decades.

Intelligence historian Christopher Andrew said the vast dossier, released by the Churchill Archives Centre at Cambridge University, was considered “the most important single intelligence source ever” by British and American authorities.

Mitrokhin was a senior archivist in the KGB’s foreign intelligence headquarters — and a secret dissident. For more than a decade, he secretly took files home, copied them in longhand and then typed them and collated them into volumes. He hid the papers at his country cottage, or dacha, some stuffed into a milk churn and buried.

The world did not learn of Mitrokhin until Andrew published a book based on his files in 1999. It caused a sensation by exposing the identities of KGB agents including 87-year-old Melita Norwood, the “great-granny spy,” who had passed British atomic secrets to the Soviets for years. Continue reading