Five Eyes

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Five Eyes: a short, simple guide

Five Eyes (FVEY) is a close intelligence partnership between five Anglophone countries: Australia, Canada, New Zealand, the United Kingdom, and the United States. They work together to gather and share intelligence, especially signals intelligence (the information sent over communications networks).

Members
- Australia
- Canada
- New Zealand
- United Kingdom
- United States

Key ideas and history
- The alliance grew out of wartime codebreaking cooperation between Britain and the United States during World War II. It was formalized after the war with the UKUSA Agreement in the mid-1940s and has continued to evolve since.
- ECHELON, a large surveillance system, developed in the 1960s as part of this cooperation and expanded to monitor communications worldwide.
- Over time, Five Eyes has expanded its focus to cover global security concerns, including terrorism, cyber threats, and other conflicts.

What they share and how they operate
- The group shares a wide range of intelligence, not just signals intelligence (SIGINT). This can include military intelligence (MILINT), human intelligence (HUMINT), and geospatial intelligence (GEOINT).
- Public programs linked to Five Eyes include efforts to collect data from communications networks and online services. Specific programs have been named in various leaks and reports, such as those involving data gathered from technology companies and direct interception of communications.

Controversies and debates
- The alliance is powerful and effective, but its secrecy and scope have led to privacy concerns and debates about civil liberties.
- The Snowden disclosures in 2013 brought widespread attention to what Five Eyes could do, including how information about private citizens might be collected and shared among member nations.

Related groups and terms
- Nine Eyes: Five Eyes countries plus Denmark, France, the Netherlands, and Norway.
- 14 Eyes: Nine Eyes countries plus Belgium, Germany, Italy, Spain, and Sweden.
- Five Eyes Plus: informal cooperation with extra countries such as France, Germany, and Japan to address challenges from places like China and Russia.
- Third Party Partners: other countries that share intelligence with Five Eyes but are not formal members.

Overall, Five Eyes is a long-running, highly capable intelligence partnership that shapes how its members monitor and respond to global security threats, while sparking ongoing public and legal discussion about privacy and the limits of surveillance.