In this file photo released by an official website of the office of the Iranian supreme leader April 9, 2015, Supreme Leader Ayatollah Ali Khamenei attends a meeting with a group of religious performers in Tehran, Iran. Iran's top leader has rejected a long-term freeze on nuclear research and supports banning international inspectors from accessing military sites as a deadline in negotiations with world powers approaches. Khamenei's comments, made Tuesday night, June 23, 2015, and broadcast on Iranian state television, suggests the Islamic Republic may be toughening its stance ahead of a June 30 deadline for a final deal. (AP Photo/Office of the Iranian Supreme Leader, File)
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