What the NSA's assault on whistleblowers taught Snowden

Investigative journalist Mark Hertsgaard's new book Bravehearts: Whistle-Blowing in the Age of Snowden tells the story of modern intelligence community whistleblowing; in a fantastic longread excerpted from the book, he recounts how the US military's program of punishing whistleblowers, and the officials charged with protecting them, convinced Snowden that he should take a thumbdrive full of documents directly to the media. Read the rest