Cline was born in Anderson Township, Illinois, in 1918. He grew up in Terre Haute, Indiana. He received a Harvard scholarship in 1935.
Cline served in the OSS during World War Two.
As chief of the agency's staff on the Sino-Soviet bloc from 1953 to 1957, he predicted the Sino-Soviet split.
He served as station chief in Taiwan from 1958 to 1962, under the official title of chief, United States Naval Auxiliary Communications Center.
He was chief of station in Bonn from 1966 to 1969.
Mr. Cline left the C.I.A. in 1969 and served as the State Department's chief of intelligence analysis.
- Committee on the Present Danger (1976 version)
- Center for Strategic and International Studies
- Consortium for the Study of Intelligence, Founder Member
- United States Global Strategy Council - founder and chair.
- 1988 International advisory board Political Communication and Persuasion
- 1979 Jerusalem Conference on International Terrorism
- 1979 Colloquium on Analysis and Estimates
- 1980 Colloquium on Counterintelligence
- 1987 Colloquium on Intelligence Requirements for the 1990s
- History Commons Ray Cline
- Namebase Cline Ray Steiner
- Sourcewatch Ray Cline
- Ray S. Cline Papers A Finding Aid to the Collection in the Library of Congress Prepared by Bradley E. Gernand with the assistance of Lisa Madison and Jennifer Barbour. Revised and expanded by Bradley E. Gernand. Manuscript Division, Library of Congress Washington, D.C. 2011.
- Spartacus International Ray S. Cline.
- Godfrey Hodgson, Obituary: Ray Cline, Independent, 19 March 1996.
- Tim Weiner, Ray S. Cline, Chief C.I.A. Analyst, Is Dead at 77, New York Times, 16 March 1996.