About Vasili Mitrokhin
Vasiliy Nikitich Mitrokhin (Russian: Василий Никитич Митрохин, romanized: Vasily Nikitich Mitrokhin; March 3, 1922 – January 23, 2004), also known as Vasili Mitrokhin, was an archivist for the Soviet Union's foreign intelligence service, the First Chief Directorate of the KGB, who defected to the United Kingdom in 1992. Mitrokhin first offered his material to the U.S. Central Intelligence Agency (CIA) in Latvia, but they rejected it as possible fakes. Afterwards, he resorted to the UK's MI6 which arranged his defection from Russia. These notes became known as the Mitrokhin Archive. Mitrokhin was co-author with Christopher Andrew of The Mitrokhin Archive: The KGB in Europe and the West, a massive account of Soviet intelligence operations based on copies of material from the archive. The second volume, The Mitrokhin Archive II: The KGB in the World, was published in 2005, soon after Mitrokhin's death. Mitrokhin first offered his material to the US' Central Intelligence Agency (CIA) in Latvia but they rejected it as possible fakes.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.