Since processed intelligence is gathered from multiple sources, the intelligence shared is not restricted to signals intelligence (SIGINT) and often involves defence intelligence as well as human intelligence (HUMINT) and geospatial intelligence (GEOINT).

In 2006 Kerbaj published an article on Sheikh Taj Din al-Hilali which won the John Curtin Prize for Journalism and a Young Journalist of the Year award at News Limited which gave him the opportunity to work at a News Limited publication in London for three months. [1]Neither the sure prevention of war, nor the continuous rise of world organisation will be gained without what I have called the fraternal association of the English-speaking peoples. This means a special relationship between the British Commonwealth and Empire and the United States... the continuance of the intimate relationship between our military advisers, leading to common study of potential dangers..." [6] The Five eyes are the countries of USA, UK, Canada, Australia and New Zealand where a need for greater intelligence gathering was needed covering different parts of the world. New Zealand says it will set China policy, not US-led Five Eyes". Al Jazeera. 19 April 2021. Archived from the original on 21 April 2021 . Retrieved 22 April 2021.

Richard Kerbaj eschewed the traditional acceptance of anonymity and undertook a painstaking journey of interviews and primary source research to get insight from senior international figures who were direct participants in the Five Eyes collaboration. This gave him a ring-side seat to the discussions, debates, arguments, agreements, disagreements, intrigue, and collaboration amongst those whose role would normally remain concealed for an eternity.China in brace position as Five Eyes form united front". South China Morning Post. 14 June 2020 . Retrieved 22 November 2020. Heather Stewart Political (21 July 2020). "Mike Pompeo praises UK decision to remove Huawei from 5G network". The Guardian. ISSN 0261-3077 . Retrieved 22 November 2020. At this time only Canada, Australia and New Zealand will be regarded as UKUSA-collaborating Commonwealth countries. [19] In writing this book, I read that Mr Kerbaj had interviews with more than one hundred intelligence officials as well as interviews with some world leaders (British Prime Ministers Theresa May and David Cameron are named). Edward Snowden Interview: The NSA and Its Willing Helpers". Der Spiegel. 8 July 2013. Archived from the original on 6 July 2014 . Retrieved 20 October 2013.