Listening to our political discourse today, vis a vis Russia, it brings back powerful reminders of the Cold War. A time when spies and covert action existed in what Le Carre called “a moral twilight.”

And yet when we think about people like Kim Philby or Alger Hiss or Aldrich Ames, is the way that they turned on their country any different than what we are seeing today?

We look at one of these instructive Cold War stories, True Believer: Stalin's Last American Spywith best selling author, and award winning journalist Kati Marton.

My conversation with Kati Marton: