By Elise Labott, Michael Pearson, and Joe Sterling
It's been more than 30 years since high-level officials from the United States and Iran sat down together to talk face-to-face.
If everything holds, that drought ends on Thursday.
Secretary of State John Kerry and Iranian Foreign Minister Mohammad Javad Zarif are set to meet in New York as part of a meeting between the Middle Eastern country and the five permanent members of the U.N. Security Council plus Germany. They will explore restarting talks on Iran's nuclear program.
Such a high-level meeting involving the United States and Iran hasn't happened since Iran's 1979 revolution, which sent relations between the two into a deep freeze.
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