76 • BRUSA
sia, Sir Robert Bruce-Lockhart was believed by Lenin to have
participated in a scheme to assassinate him. This became known as
the Lockhart Plot and implicatedSidney Reillywho, unlike Bruce-
Lockhart, really was aSecret Intelligence Serviceofficer.BRUSA.The first Anglo-American cryptographic treaty, the British–
United States Security Agreement (BRUSA), signed on 17 May
1943, resulted in the general introduction of the Combined Cipher
Machine and a division of other responsibilities of mutual interest.
The agreement was negotiated by the legendary codebreaker William
Friedman, author Telford Taylor, and the head of the newly formed
Special Branch of the U.S. Signal Corps, Colonel Alfred McCor-
mack. It provided for ‘‘a full exchange of cryptographic systems,
cryptanalytical techniques,direction finding, radio interception and
other technical communication matters.’’ John Tiltman, head of
GCHQ’s General Cryptographic Section, was posted to Washington,
D.C., as a liaison officer, a post he was to hold until 1954. Accompa-
nying him were George McVittie, an expert on meteorological codes,
and Philip Howse and James Gillis, both specialists in Japanese Navy
traffic.
In November 1943 a second inter-Allied conference was held at
Arlington Hall, Virginia, at which GCHQ was represented by (Sir)
Edward Travis, with his counterparts from Canada and Australia.
BRUSA remained in effect until it was superseded in 1947 by the
UKUSA Agreement.
BRYCE, IVAR.A prewar playboy and close, lifelong friend ofIan
Fleming, Ivar Bryce moved to New York in 1938 and later was re-
cruited intoBritish Security Coordination(BSC), for whom he un-
dertook clandestine missions to South America. Bryce speculated in
his autobiography,You Only Live Once,that he might have been a
model for Fleming’sJames Bondand revealed his role in an attempt
to destroy the fuel stocks in Recife upon which the Italian transatlan-
tic airline LATI relied. Although the fire set by Bryce’s incendiaries
was unsuccessful, BSC mounted an alternative, political campaign to
persuade the Brazilian president to cancel LATI’s landing rights,
which achieved its objective.