The Five Eyes 👀 alliance has operated since 1946, but 2025-2026 tested its limits: the UK suspended Caribbean intel sharing with the US, then rejoined its allies weeks later on a separate security warning. It's a key reason alliances like Five Eyes remain both durable and fragile at once.
How nations share intelligence: treaties and MOUs | PsyllHow nations share intelligence through treaties, MOUs, and technical protocols - and why ORCON, NOFORN and Five Eyes define the limits of modern cooperation.psyll.com