
ABCANZ Armies is a program aimed at optimizing interoperability and standardization of training and equipment between the armies of Australia, Canada, New Zealand, the United Kingdom, and the United States, plus the United States Marine Corps and the Royal Marines. Established in 1947 as a means to capitalize on close cooperation between the United States, United Kingdom, and Canada during World War II, the program grew to include Australia and New Zealand.

The Australia, New Zealand, United States Security Treaty is the 1951 collective security non-binding agreement between Australia and New Zealand and, separately, Australia and the United States, to co-operate on military matters in the Pacific Ocean region, although today the treaty is taken to relate to conflicts worldwide. It provides that an armed attack on any of the three parties would be dangerous to the others, and that each should act to meet the common threat. It set up a committee of foreign ministers that can meet for consultation.

CANZUK is an acronym for the theoretical cultural, political and economic community comprising Canada, Australia, New Zealand and the United Kingdom as part of an international body similar in scope to the former European Economic Community. This includes increased trade, foreign policy co-operation, military co-operation and mobility of citizens between the four states. The idea is supported by various organisations and think tanks, such as CANZUK International, the Adam Smith Institute, the Henry Jackson Society, Bruges Group and politicians from the four countries.

The Diamond Age: Or, A Young Lady's Illustrated Primer is a science fiction novel by American writer Neal Stephenson. It is to some extent a Bildungsroman or coming-of-age story, focused on a young girl named Nell, set in a future world in which nanotechnology affects all aspects of life. The novel deals with themes of education, social class, ethnicity, and the nature of artificial intelligence. The Diamond Age was first published in 1995 by Bantam Books, as a Bantam Spectra hardcover edition. In 1996, it won both the Hugo and Locus Awards, and was shortlisted for the Nebula and other awards. In 2009, a six-hour miniseries adapted from the novel was slated for development for the Syfy Channel, although the adaptation did not ultimately emerge.

ECHELON, originally a secret government code name, is a surveillance program operated by the United States with the aid of four other signatory states to the UKUSA Security Agreement: Australia, Canada, New Zealand, and the United Kingdom, also known as the Five Eyes.

The Five Eyes (FVEY) is an intelligence alliance comprising Australia, Canada, New Zealand, the United Kingdom and the United States. These countries are parties to the multilateral UKUSA Agreement, a treaty for joint cooperation in signals intelligence.

The Five Nations Passport Group is an international forum between the passport issuing authorities of Australia, Canada, New Zealand, the United Kingdom and the United States to share best practices in the issuance, development, and management of passports. The annual Five Nations Passport Conference is a largely informal in-person meeting between officials of the participating agencies, with some additional invited guests such as the Irish Department of Foreign Affairs and Trade in 2011. It has taken place since at least as far back as 2004.
The Five Power Defence Arrangements (FPDA) are a series of defence relationships and mutual cooperation established by a series of multi-lateral agreements between Australia, Malaysia, New Zealand, Singapore, and the United Kingdom signed in 1971, whereby the five powers are to consult each other "immediately" in the event or threat of an armed attack on any of these five countries for the purpose of deciding what measures should be taken jointly or separately in response.

The Special Relationship is an unofficial term often used to describe the political, diplomatic, cultural, economic, military, and historical relations between the United Kingdom and the United States. The term first came into popular usage after it was used in a 1946 speech by former British Prime Minister Winston Churchill. The two nations have been close allies during many conflicts in the 20th and 21st centuries, including World War I, World War II, the Korean War, the Cold War, the Gulf War, and the War on Terror.

STATEROOM is the code name of a highly secretive signals intelligence collection program involving the interception of international radio, telecommunications and internet traffic. It is operated out of the diplomatic missions of the signatories to the UKUSA Agreement and the members of the ECHELON network including Australia, New Zealand, United Kingdom, Canada and the United States.

The United Kingdom – United States of America Agreement is a multilateral agreement for cooperation in signals intelligence between Australia, Canada, New Zealand, the United Kingdom, and the United States. The alliance of intelligence operations is also known as the Five Eyes. In classification markings this is abbreviated as FVEY, with the individual countries being abbreviated as AUS, CAN, NZL, GBR, and USA, respectively.