RaveThe Washington Post...[a] gripping and devastatingly even-handed account ... Epstein struggles to paint a factual portrait of Snowden without it feeling like an ad hominem attack ... Most of the public debate since that summer has been over whether Snowden is a hero or a traitor, a whistleblower or a spy. Epstein’s answer is both — but more spy than whistleblower. And the case he builds, especially in light of disclosures since the U.S. election in November, is damning ... In this winter of rattled confidence in government, Epstein’s welcome reappraisal of the most destructive data breach in the history of U.S. intelligence brings nothing to mind so much as the Roman poet Juvenal’s timeless question: 'Who will guard the guards themselves?'