Biggest news from NBC/Snowden interview: NBC confirmed Snowden filed written concerns with NSA - something USG has vehemently denied.

— Glenn Greenwald (@ggreenwald) May 29, 2014

Wait a day.

As @benwizner says, whether Snowden first invoked the “proper” (deliberately impotent) channels is also irrelevant http://t.co/tPSjMkD5vV

— Glenn Greenwald (@ggreenwald) May 30, 2014