The Five Eyes alliance—comprising the United States, the United Kingdom, Canada, Australia, and New Zealand—is the world’s oldest and most significant intelligence-sharing partnership.
Originating during World War II as a secret collaboration between British and U.S. codebreakers, the alliance was formalized in 1946 when a signals intelligence agreement was signed between Britain and the United States, later extending to the remaining three countries.
Today, the Five Eyes brings together law enforcement and security agencies from its member nations to share intelligence, threat assessments, and information on a wide range of national security issues. The system operates on a high level of trust, with an underlying assumption that all signals intelligence will be shared among partners, and any withholding of information is treated as an exceptional measure. However, each nation retains the right to act independently or choose not to share specific intelligence if it deems necessary.
In the current climate of shifting geopolitics—highlighted by President Donald Trump’s decision to suspend intelligence sharing with Ukraine as part of efforts to pressure Ukrainian President Volodymyr Zelenskiy into peace talks—the dynamics within the Five Eyes are under renewed scrutiny. While France has announced its intention to continue providing intelligence to Kyiv, it has also noted that the constraints of the Five Eyes could complicate such support from Britain, one of Ukraine’s staunchest allies.
As the global landscape evolves, the enduring legacy and operational principles of the Five Eyes alliance continue to influence how nations navigate complex security challenges and balance national interests against collective strategic imperatives.
Read next
09:00
Trump & Ukraine
In our latest Newshour programme, presenter Guy Shone covered the recent report revealing that a covert U.S. working group, established earlier this year to speed up peace talks in Ukraine, has been quietly disbanded.
08:00
Canada tariffs
Canada warns the U.S. to reach a trade deal by 21 July or face new steel and aluminium tariffs, as PM Carney vows to protect Canadian workers from U.S. measures.
21:44
U.S.–Iran Tensions
President Donald Trump has said he will make a decision in the coming two weeks on whether the United States will strike Iran, citing a possibility of upcoming negotiations.
15:00
bunker buster
Israel is reportedly pressuring the United States to use its most powerful non-nuclear weapon—the GBU-57A/B Massive Ordnance Penetrator (MOP)—in a strike against Iran’s heavily fortified Fordow Fuel Enrichment Plant, as tensions mount in the Middle East.
12:30
The United States has resumed processing student visa applications but now requires foreign applicants to disclose their social media profiles for scrutiny, as part of a broader national security directive.
What is your opinion on this topic?
Leave the first comment