Associated Press: This year marks 40 years since Iran’s 1979 Islamic Revolution, when 2,500 years of monarchy gave way to a Shiite supreme leader. In part 4 of this AP series, our reporters recall the U.S. Embassy takeover that sparked the 444-day hostage crisis that still colors tension now between America and Iran amid its collapsing nuclear deal.

Watch episodes 1,2, and 3 here

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