SENIOR EXECUTIVE INTELLIGENCE BRIEF (SEIB).ASEIB is
a current intelligencepublication of the Central Intelligence Agency
(CIA) delivered to a select group of government officials usually six
days a week. Formerly known as the National Intelligence Daily
(NID), this publication was former Director of Central Intelligence
(DCI)William Colby’sidea, who recommended during the mid-1960s
that the CIA’s daily intelligence report, known as the National Intelli-
gence Digest, be issued in newspaper format. In doing so, Colby
sought to offer readers a choice between a headline summary and in-
depth reports. Judging that the newspaper format was too inflexible,
the NID was subsequently produced in magazine format. The SEIB is
produced by the CIA’s Directorate of Intelligence(DI), in coordina-
tion with the Defense Intelligence Agency (DIA), the State Depart-
ment’s Bureau of Intelligence and Research (INR), and the National
Security Agency (NSA) and is distributed to several hundred officials.
The text notes dissenting views either in the text of the article or in a
separate paragraph. There is no classification limit, although the SEIB
is produced in various versions with different classifications and is tai-
lored to different consumers, with some versions cabled to major U.S.
posts overseas and some U.S. military commands.SENIOR INTERDEPARTMENTAL GROUP (SIG).SeeSPECIAL
GROUP(COUNTERINSURGENCY).SHAMROCK (OPERATION). During World War II, military intelli-
gence and three American private cable companies came to an arrange-
ment whereby the companies shared some telegraph traffic involving
foreign targets with military intelligence, despite the prohibition of such
sharing by section 605 of the Communications Act of 1934. In time, the
arrangement also included telegrams sent by suspicious American citi-
zens. The secretary of defense renewed the deal in 1947 under the code
name SHAMROCK. The companies—RCAGlobal, ITTWorld Com-
munications, and Western Union International—believed that the
arrangement had the approval of the president of the United States. The
Army Security Agency (ASA) and subsequently the National Secu-
rity Agency (NSA) scanned hundreds of thousands of communications
under SHAMROCK until Secretary of Defense James R. Schlesinger
discontinued it in May 1975. See alsoYARDLEY, HERBERTO.182 • SENIOR EXECUTIVE INTELLIGENCE BRIEF05-398 (2) Dictionary.qxd 10/20/05 6:27 AM Page 182