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British World War II intelligence program that opened neutral diplomatic pouches
Triplex
or
XXX
was the
code name
of a
British
espionage
operation in
World War II
[1]
which involved secretly copying the contents of
diplomatic pouches
of neutral countries.
Due to travel security restrictions to and from Britain during some periods of the war, the government was able to forbid the use of the embassies' own couriers to transport pouches or was able to separate the courier from the pouch to "sensor" the passenger. This provided opportunities to access the pouch and copy the contents for later analysis.
Anthony Blunt
, while working for
MI5
, was a supervisor of the Triplex operation.
References
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