Do you know how to butter your bread like a Finn? The KGB sure did, thanks to the album “Life, morals and customs of the population of Finland,” created and used by Soviet military intelligence in the 1970s. We can now read it because of the declassified KGB archives, brought to you by KGB Files.
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Eduard Andryushchenko: How to be a Finn if you’re a Soviet spy
Embassy of the Russian Federation in Helsinki, 26th of April 1982.