How have the Glorious, French and Industrial revolutions shaped modern politics? How did the Left versus Right divide come about? Might a potential U.S.-Iran nuclear deal be a gamechanger for peace in the Middle East? And how seriously should Canada take Trump's relentless 51st state threat? CNN's Fareed Zakaria joins host Steve Paikin for a wide-ranging discussion on the tumultuous state of play in the world today. He is the author of "Age of Revolutions: Progress and Backlash from 1600 to the Present," and a columnist for The Washington Post.

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