Four journalists who revealed the National Security Agency’s vast web of spying have been awarded the 2013 George Polk Awards in Journalism. Glenn Greenwald, Laura Poitras, Ewen MacAskill of The Guardian and Barton Gellman of The Washington Post were among the winners announced on Sunday. Other winners include Matthieu Aikins, for uncovering “convincing evidence” that a U.S. Army Special Forces Unit killed 10 Afghan civilians in Wardak Province. Aikins spoke about his report for Rolling Stone, called “The A-Team Killings,” on Democracy Now! in November.

Matthieu Aikins: “But the question really is: Who else knew about these incidents beforehand? How is it possible that at least one level in the chain of command above this unit could not have known that there were war crimes? There was serious evidence of war crimes in Wardak province. And if they weren’t involved in a cover-up, then they must have at least been willfully blind.”

Search our website to watch all of our recent interviews with Aikins, Greenwald and Poitras.