‘Dunkirk’ director and actor: It’s ‘one of the greatest stories in human history’

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“Inception” director Christopher Nolan and Oscar-winning actor Mark Rylance (“Bridge of Spies”) talk to TODAY’s Al Roker about the big-screen World War II epic “Dunkirk.” Nolan says that for British people, the story of the Dunkirk evacuation is more than history: “It’s a part of the culture.”