NSA surveillance is a complex subject - legally, technically and operationally.

- Barton Gellman

I have no evidence of any relationship between IRS and NSA.

- Barton Gellman

There's a long history of private-company cooperation with the NSA that dates back to at least the 1970s.

- Barton Gellman

The NSA and Israel wrote Stuxnet together.

- Edward Snowden

The NSA routinely lies in response to congressional inquiries about the scope of surveillance in America.

- Edward Snowden

What I said was, the NSA does not voyeuristically pore through U.S. citizens' e-mails. I stand by that.

- James R. Clapper