The fruits of the agreement are illustrated by reports on finished products from the early years of the Cold War. They show the nature of the material that was shared by the signatories of the agreement and contain military intelligence services as well as fascinating details of daily life within the Soviet Union. As part of the agreement, GCHQ and the NSA shared information about the Soviet Union, the People`s Republic of China and several Eastern European countries (known as Exotics).  The network was transformed into a scaly collection and analysis network in the 1960s.  Ed Hampshire, a senior expert on the national archives, said: “The agreement was a watershed moment in the development of the `special relationship` between the two allies during the war, and covered the spirit and practice of signal intelligence cooperation that had developed ad hoc during World War II.” Although its existence has long been known, the agreement, which was negotiated in London in March 1946, is only published now and is officially recognized for the first time, after questioning Britain and the United States on freedom of information. As part of the agreement, countries agreed to exchange knowledge on operations related to the interception, decryption and translation of foreign communications, including the “acquisition of documents and communication equipment.” In a passage that has ensured that GCHQ`s activities remain in professional secrecy, the agreement states: “It is contrary to this agreement to disclose its existence to third parties, whatever.” Details of the NSA agreement to share the personal data of U.S. citizens with UNSI israel documents, released today and available free of charge www.nationalarchives.gov.uk/ukusa for one month, include amendments and appendices of the agreement. One, dated 1948, says: “The value of the intelligence of communication in war and peace cannot be overestimated; Preservation of the source is particularly important. He added: “The deadline for protecting the intelligence of communication is never over. He added: “As the threat of Nazi Germany was replaced by a new one in the east, the agreement served as the basis for intelligence cooperation during the Cold War. The two nations, associated with common links of history, culture and language, agreed not to gather information against each other or to inform a “third party” of the existence of the agreement.
After Murphy`s 1973 attacks on the headquarters of the Australian Security Intelligence Organization (ASIO), Australian Prime Minister Gough Whitlam learned of the UKUSA agreement. After learning of the agreement, Whitlam discovered that Pine Gap, a secret surveillance station near Alice Springs, Australia, had been operated by the US Central Intelligence Agency (CIA).     The agreement was signed on March 5, 1946 by Colonel Patrick Marr-Johnson, mandated by the London Signals Intelligence Board and Lieutenant General Hoyt Vandenberg for the State-Army-Navy Communication Board.