Xiaoxing Xi, a Temple University physics professor, speaks in front of a photo of Sherry Chen, a federal government worker, at a September 2015 Washington, D.C., press conference about the spying charges against them that were dropped. Xi says his wife and daughters were marched out of their bedrooms at gunpoint when he was arrested in May 2015. Saul Loeb/AFP/Getty Images hide caption

toggle caption Saul Loeb/AFP/Getty Images

The Fine Line Between Countering Security Threats And Racial Profiling

  • Download
  • <iframe src="https://www.npr.org/player/embed/490174040/490174041" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

At the height of the Cold War, the FBI and the National Security Agency built a secret tunnel beneath the Russian Embassy (shown here in 2013), so that American spies could eavesdrop on what was happening inside. J. Scott Applewhite/AP hide caption

toggle caption J. Scott Applewhite/AP

Decades After Cold War's End, U.S.-Russia Espionage Rivalry Evolves

  • Download
  • <iframe src="https://www.npr.org/player/embed/481440402/482123572" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Duane "Dewey" Clarridge, a CIA veteran, speaks in May 2007 during an Arkansas Committee on Foreign Relations luncheon in Little Rock, Ark. The retired spy criticized the CIA's leadership and said a lack of human intelligence had led to mistakes in Iraq, Iran and North Korea. Mike Wintroath/AP hide caption

toggle caption Mike Wintroath/AP

Russia's Vladimir Putin makes a speech in 2009 after receiving an award in Dresden, Germany, where he served as a KGB officer during the Cold War. Norbert Millauer/AFP/Getty Images hide caption

toggle caption Norbert Millauer/AFP/Getty Images

Spy Vs. Spies: Why Deciphering Putin Is So Hard For U.S. Intelligence

  • Download
  • <iframe src="https://www.npr.org/player/embed/469879309/469897754" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
Courtesy of Doubleday

From Blueprints To Betrayal: The Daring, And Downfall, Of A Cold War Spy

  • Download
  • <iframe src="https://www.npr.org/player/embed/419247901/420338783" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Jason Rezaian, an Iranian-American correspondent for the Washington Post, faces four serious charges, including espionage, according to his lawyer. He's shown in 2013. Vahid Salemi/AP hide caption

toggle caption Vahid Salemi/AP

Seed corn sits in the hopper of a planter. Scott Olson/Getty Images hide caption

toggle caption Scott Olson/Getty Images