According to the paper the group, which adds Norway, Denmark, France and The Netherlands to the "5-eyes" collective of major English-speaking countries, enjoys access to selected US intelligence in exchange for sharing intelligence from their own countries.
Minutes from Britain's GCHQ intelligence agency, obtained by the Guardian from the NSA whistleblower Edward Snowdon, suggest that Germany is jealous of Norway's status.
"The NSA's relationship with the French was not as advanced as GCHQ's … the Germans were a little grumpy at not being invited to join the 9-Eyes group," the minutes read.
Story continues below…
Norway's intelligence agencies signed their first secret deal with the Americans in 1952.