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).     Because of its secret treaty status, its existence was not known to the Australian Prime Minister until 1973 and was not made public until 2005.  On 25 June 2010, the full text of the agreement was published for the first time in history by the United Kingdom and the United States and can now be accessed online.   Shortly after its publication, the seven-page UKUSA agreement was recognized by Time Magazine as one of the most important documents of the Cold War and of immense historical importance.  The agreement was the result of a 10-page Anglo-American Communication Agreement (BRUSA) of 1943, which linked the signal interception networks of the British GCHQ (GCHQ) and the United States National Security Agency (NSA) at the beginning of the Cold War. March 27, 1946, signed by Colonel Patrick Marr-Johnson for the London Signals Intelligence Board and Lieutenant General Hoyt Vandenberg for the U.S. State-Army-Navy Communication Intelligence Board. Although the original agreement states that trade does not «harm national interests,» the United States has often blocked the exchange of information from Commonwealth countries. The full text of the agreement was made public on 25 June 2010.  The terms of a secret agreement that has become at the heart of The special relationship between Britain and the United States are published today more than 60 years after senior military officials signed the agreement. 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.
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. The treaty was extended to Canada (1948), Australia (1956) and New Zealand (1956). In 1955, the agreement was updated to describe Canada, Australia and New Zealand as «Commonwealth countries cooperating with UKUSA.»  The other countries that joined as a «third party» were Norway (1952), Denmark (1954) and West Germany (1955). The documents www.nationalarchives.gov.uk/ukusa published today and free from today contain amendments and annexes to 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. However, the existence of the UKUSA agreement was not made public until 2005.  The content of the agreement was officially made public on June 25, 2010.