Iran's President Hassan Rouhani waves as his motorcade leaves Tehran's Mehrabad Airport upon his arrival from New York Saturday, one day after he spoke to President Obama by phone. Atta Kenare /AFP/Getty Images hide caption

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Atta Kenare /AFP/Getty Images

Iranian President Hassan Rouhani at the U.N. on Tuesday. Ray Stubblebine /Reuters/Landov hide caption

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Ray Stubblebine /Reuters/Landov

On 'Morning Edition': Diplomat Ryan Crocker on his meetings with Iranian officials

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President Obama addresses the 68th session of the United Nations General Assembly at the United Nations in New York. Timothy Clary/AFP/Getty Images hide caption

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Timothy Clary/AFP/Getty Images

Iranian President Hassan Rouhani during an interview with NBC — part of a charm offensive ahead of his visit to the U.N. General Assembly. Rouzbeh Jadidoleslam/AP hide caption

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Rouzbeh Jadidoleslam/AP

On 'Morning Edition': NPR's Michele Kelemen previews the opening of the U.N. General Assembly

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Iranian President Hassan Rouhani talks to NBC — part of a charm offensive ahead of his visit to the U.N. General Assembly in New York next week. Rouzbeh Jadidoleslam/AP hide caption

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Rouzbeh Jadidoleslam/AP

Iranian President Hassan Rowhani earlier this month. Behrouz Mehri /AFP/Getty Images hide caption

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Behrouz Mehri /AFP/Getty Images

On 'Morning Edition': Karim Sadjadpour of the Carnegie Endowment for International Peace

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