NSA surveillance program reaches 'into the past' to retrieve, replay phone calls

The Washington Post
March 18, 2014 AT 8:50 PM
The National Security Agency has built a surveillance system capable of recording “100 percent” of a foreign country’s telephone calls, according to people with direct knowledge of the effort and documents supplied by former contractor Edward Snowden. Ashkan Soltani, who broke the story with Barton Gellman, explains the Obama administration's recent guidance on bulk collection.