Iran

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Ayatollah Ali Khamenei is Iran's supreme leader. (AP Photo/Office of the Supreme Leader)

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** FILE ** In this Aug. 15, 2013, file photo, Iranian President Hasan Rouhani speaks during the debate on the proposed Cabinet at the parliament, in Tehran, Iran. (AP Photo/Ebrahim Noroozi, File)

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Syria and Iran are just two of the global issues facing President Obama as he prepares to address the United Nations General Assembly this week. (ASSOCIATED PRESS)