(< UK-USA)

olemus
viiepoolse koostöö leping signaaliluure alal (USA, UK, Kanada, Austraalia, Uus-Meremaa), sai alguse 1941. a. Atlandi hartast, sõlmiti 1946-56
= a multilateral agreement for cooperation in signals intelligence
between Australia, Canada, New Zealand, the United Kingdom, and the United States

ülevaateid
https://en.wikipedia.org/wiki/UKUSA_Agreement
https://www.gchq.gov.uk/information/brief-history-of-ukusa
https://www.nsa.gov/news-features/declassified-documents/ukusa/
https://www.bibliotecapleyades.net/ciencia/echelon/echelon03.htm
https://www.omicsonline.org/open-access/the-intelligence-club-a-comparative-look-at-five-eyes-2332-0761-1000261.php?aid=89994
https://privacyinternational.org/sites/default/files/2018-04/Secret%20Global%20Surveillance%20Networks%20report%20web%20%28200%29_0.pdf
https://www.tandfonline.com/doi/pdf/10.1080/00045608.2015.1015098