Comment Only English-speaking countries can join the club (Score 1) 242
After checking all the comments, I didn't see anyone pointing out what seemed very obvious to me when I read the summary: all the countries, USA, Britain, Canada, Australia and New Zealand, are offshoots of the old British empire, and all speak English only (well, Canada does have some francophones). It's like a club of like-minded countries, with the same base culture and language.
There's an interesting article on the New York Times, http://www.nytimes.com/2014/06... which contends that moral judgements depend on what language we're speaking. Within this 5-country native English language club, the emotional strength of their own shared language totally overrides any moral qualms they might have for spying on those foreigners speaking strange languages in primitive countries.