LYALIN, OLEG ADOLPHOVICH (?–1995).The defection of Lyalin
in London in 1971 seriously compromised KGBcovert operations in
Europe. Lyalin, who had been tasked by Moscow to prepare sabotage
operations in the United Kingdom to be activated in case of war, pro-
vided the British with detailed intelligence and military information
about the Soviet Union. As a result of this information, the British
government expelled 90 KGB and GRUofficers and refused to allow
another 15 on leave in the Soviet Union to return to Britain. He re-
portedly compromised agents throughout Western Europe. Lyalin’s
information also compromised KGB plans for sabotage and terror in
the West. Much of his information was declassified and published in
the British press. Another result of his defection was the reorganiza-
tion of the KGB’s components responsible for paramilitary opera-
tions: within the First Chief Directorate, the Eighth Department of
Directorate S, which organized illegalwork, was given additional re-
sponsibility for paramilitary activity.LYUSHKOV, GENRIKH SAMOILOVICH (1900–1945).One of the
first Soviet defectors, Lyushkov joined the Chekain 1919 before his
20th birthday, and was assigned to a frontline infantry division.
Lyushkov rose quickly in the service, and in 1938 he was serving as
NKVDchief in the Far East. Fearing that he was about to become
a victim of his own service, Lyushkov defected to the Japanese on
6 June 1938. For the next several years, he worked for the Japanese
military. Following the Soviet invasion of Manchuria in August 1945,
Lyushkov was shot by a Japanese officer and buried in a grave as a
member of the Japanese military.- M –
MACLEAN, DONALD STUART (1913–1984).One of the most im-
portant Soviet agents within the British establishment, Maclean pro-
vided the Soviet leadership with insight into British policy making
for 15 years. Maclean was the son of a Liberal Party cabinet minis-
ter. A brilliant student at Cambridge, he was converted to commu-
nism at university. Recruited by a Soviet illegal, Maclean was asked
to assume the cover of an earnest and intelligent ex-communist and150 •LYALIN, OLEG ADOLPHOVICH (?–1995)06-313 G-P.qxd 7/27/06 7:56 AM Page 150