Edward Snowden made a greater effort than originally believed to raise his concerns within the NSA before releasing thousands of classified documents detailing programs that allowed the agency to spy on U.S. citizens. The truth is more complex than the NSA let on, according to a report based on documents secured through two years of Freedom of Information Act litigation. In the aftermath of Snowden's release of a cache of stolen NSA documents, he claimed that he had exhausted all official avenues available to him before going public.