[citation needed]
The very first sentence you quoted doesn't cite any of Snowden's docs that says that. The very next sentence you quoted has a bunch of citations that say the opposite. In fact, conspiracy theorists speculated what you claim after Snowden dumped his documents, but none of Snowden's documents corroborated that claim.
Previously discussed: https://news.ycombinator.com/item?id=35763700
So much trust involved in a possibly nuclear-level scenario, and you're not curious at all how that trust was built up? Such as by sharing intelligence?
Because they don't spy on each other and they share intelligence gathered elsewhere, as the agreement says. Why would you jump to the conclusion that this quote means they help each other break their respective countries' laws despite complete lack of evidence?
> Documents leaked by Snowden in 2013 revealed that the FVEY has been spying on one another's citizens and sharing the collected information with each other, although the FVEY nations maintain that this was done legally. It has been claimed that FVEY nations have been sharing intelligence in order to circumvent domestic laws, but only one court case in Canada has found any FVEY nation breaking domestic laws when sharing intelligence with a FVEYs partner.[11][12][13][14]