Reality Winner leaves the Augusta Courthouse on June 8, 2017, in Augusta, Ga. Winner, a former intelligence industry contractor, pleaded guilty to leaking National Security Agency documents. Sean Rayford/Getty Images hide caption
NSA leaks
Russian President Vladimir Putin, who appears not to have told the whole story about his nation's surveillance programs. Alexei Nikolsky/AP hide caption
Russian President Vladimir Putin as he answered questions on national TV Thursday in Moscow. Alexey Nikolsky/RIO Novosti/Kremlin pool/EPA/Landov hide caption
Glenn Greenwald, left, and David Miranda after Miranda's arrival at Rio de Janeiro's International Airport on Aug. 19, 2013. Miranda had been detained for nine hours at London's Heathrow Airport. Authorities questioned him about Greenwald's reporting of the "NSA leaks." Ricardo Moraes/Reuters/Landov hide caption
Edward Snowden, seen during a video interview with The Guardian. Glenn Greenwald/Laura Poitras/EPA/LANDOV hide caption
Travelers at Pearson International Airport in Toronto earlier this month. At an unnamed airport, Canada's spy agency tested a program that allowed them to track those who took advantage of free Wi-Fi. Aaron Harris/Reuters/Landov hide caption
A demonstrators shown during a march in October outside Capitol Hill demanding that Congress investigate the NSA. Jose Luis Magana/AP hide caption
An advertisement thanking NSA leaker Edward Snowden appears on the side of a Metrobus in downtown Washington, D.C., in November. Jim Lo Scalzo/EPA /Landov hide caption
Edward Snowden in an image from an October TV report. AFP/Getty Images hide caption
Secretary of State John Kerry. Fang Zhe/Xinhua/Landov hide caption
Edward Snowden, seen during a video interview with The Guardian. Glenn Greenwald/Laura Poitras/EPA/LANDOV hide caption
German Chancellor Angela Merkel and President Obama in September at the G20 summit in Russia. She and other leaders have objected after hearing that the NSA was listening to their phone calls. Anton Denisov/Host photo agency/Getty Images hide caption
Some of the electronic equipment atop the National Security Agency's facility in Fort Meade, Md. Greg Mathieson/MAI/Landov hide caption
Edward Snowden, seen during a video interview with The Guardian. Glenn Greenwald/Laura Poitras/EPA/LANDOV hide caption
Glenn Greenwald (left) and David Miranda after Miranda's arrival early Monday at Rio de Janeiro's International Airport. Miranda had been detained for 9 hours at London's Heathrow Airport. Authorities reportedly questioned him about Greenwald's reporting of the "NSA leaks." Ricardo Moraes/Reuters/Landov hide caption
The National Security Agency headquarters at Fort Meade, Md. Saul Loeb/Getty Images hide caption
The National Security Agency headquarters at Fort Meade, Md. Saul Loeb/Getty Images hide caption