Cryptonym: AECLUSTER
104-10172-10264: MFR CIA DEFECTOR WATCH LIST FOR THE SECRET SERVICE, https://www.archives.gov/files/research/jfk/releases/104-10172-10264.pdf
The document is a less redacted version of a prior release that features (https://www.maryferrell.org/showDoc.html?docId=16292&relPageId=2) a list of compiled defectors the Secret Service was given by the CIA for surveillance operations during the visit of Russian Premier Leonid Brezhnev in the 1970s. Various Agency departments including the Domestic Contacts Service, Counterintelligence Staff, and the Psychiatric Staff recommended selected defectors for inclusion. It states that AECLUSTER was a defector named Sakharov.
"K.G.B. DEFECTOR GUNDAREV IT'S COLD COMING OUT", NY Times Magazine, 1989, https://www.nytimes.com/1989/09/17/magazine/kgb-defector-gundarev-it-s-cold-coming-out.html
This media article refers to "Vladimir N. Sakharov, a former Soviet diplomat in the Middle East who had been co-opted by the K.G.B, risked his life to work as an agent in place for the C.I.A. before he defected in 1971." This would match the description of the aforementioned defector Sakharov, and it would match the time period of his time in the United States.
104-10225-10027: CIA FILE ON PSYCH WARFARE GENERAL: COUNTRY CHILE.
05/10/74: Cable from Director to Withheld (Info: Withheld, Santiago): (Orig: Maria C. Walsh, Unit: E/SC/S): "1. A former Soviet Foreign Ministry officer (AECLUSTER) reported that the name of one Andres Aleksandrovich Kyung, born 1945, naturalized Swedish citizen, appeared on Soviet visa blacklist and he is to be denied visa to USSR. No reason given for this denial by MFA. (DOI: Mid-1971). No other trace HQs files. 2. (REDACTION) PLS furnish traces subject ref. 3. No file." Releasing Officer: J. Caswell, C/EUR. Authenticating Officer: (Signature), AC/E/SC.