2008, James Bamford, The Shadow Factory: The Ultra-Secret NSA from 9/11 to the Eavesdropping on America, Anchor →ISBN
In fact, in 2003, during the United Nations Security Council debate over whether to invade Iraq, the NSA asked all Five Eyes countries to target the communications between diplomats on the Council.
2014, Glenn Greenwald, No Place to Hide: Edward Snowden, the NSA, and the U.S. Surveillance State, Metropolitan Books →ISBN
Broadly speaking, the NSA has three different categories of foreign relationships. The first is with the Five Eyes group: the US spies with these countries, but rarely on them, unless requested to by those countries' own officials.
