The Economist asks: What can history teach spies?

Christopher Andrew, author of "The Secret World", warns intelligence services of the dangers of historical attention span deficit disorder.  He argues we can only understand Vladimir Putin — and allegations of meddling in foreign elections — in the context of the long history of Russia.  And who was the Edward Snowden of the Victorian era? Anne McElvoy hosts. Music by Chris Zabriskie, “Divider” (CC by 4.0 UK)

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