Brad Friedman interview: We're in the Abyss: My KPFK 'BradCast' Interview with Daniel Ellsberg on Edward Snowden (audio link located at the end of the article)
Economist interview: Eight questions for Daniel Ellsberg
Guardian editorial: Why the Pentagon Papers matter now
NPR: Pentagon Papers Leaker Daniel Ellsberg Praises Snowden, Manning
U.S. Espionage Act and the Legal and Constitutional Issues Raised by WikiLeaks