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He was elected only months ago, but he is already starting to change the face of Iran on the world stage. Hassan Rouhani, a former nuclear negotiator and national security adviser, is Iran's new president, and he made his big debut at the United Nations General Assembly Tuesday by asking the world to say, "yes to peace and no to war."
Who is this man, and can the U.S. really trust his charm offensive? CNN's Barbara Starr reports.
Be sure to catch Christiane Amanpour's interview with Pres. Hassan Rouhani on AC360, tonight 8 pm ET.