83. The Man Who Saved The World: Countdown to Armageddon (Ep 4)

It’s 1983 and the world is on the brink of nuclear war. Operation Able Archer has ratcheted tensions right up, how is Oleg Gordievski going to prevent a nuclear apocalypse? Is this the greatest contribution of any spy to humanity? And what does it say about the enduring value of human intelligence?…