The United States and Russia are said to be working on a spy swap, following the arrests of 10 alleged Russian agents by the FBI last month. It is believed that the suspects were involved in a spy ring that involved everything from secret code words to aliases and encrypted radio communication. In exchange, the United States is arranging for the release of individuals detained in Russia, including a Russian nuclear scientist convicted of passing secrets to the CIA. Is this just the tip of the espionage iceberg? How common is spying today?
Dina Temple-Raston, NPR counter-terrorism correspondent