New book 'Spies' chronicles war of espionage between U.S. and Russia

For decades, the U.S. and Russia have been locked in a war of espionage and compelling new details about the stealth operations between the two countries are coming to light. Geoff Bennett asked author Calder Walton about those revelations in his new book, "Spies: The Epic Intelligence War Between East and West." PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders