Ellen Nakashima and Barton Gellman report:
Virtually no foreign government is off-limits for the National Security Agency, which has been authorized to intercept information “concerning” all but four countries, according to top-secret documents.
The United States has long had broad no-spying arrangements with those four countries — Britain, Canada, Australia and New Zealand — in a group known collectively with the United States as the Five Eyes. But a classified 2010 legal certification and other documents indicate the NSA has been given a far more elastic authority than previously known, one that allows it to intercept through U.S. companies not just the communications of its overseas targets but any communications about its targets as well.
Read more on Washington Post.