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FILE – In this April 10, 2021 file photo released by the official website of the office of the Iranian Presidency, President Hassan Rouhani, second right, listens to head of the Atomic Energy Organization of Iran Ali Akbar Salehi while visiting an exhibition of Iran’s new nuclear achievements in Tehran, Iran. Iran’s president on Thursday offered his most-optimistic assessment yet of ongoing talks to resuscitate his country’s nuclear deal with world powers, claiming there had been “major” agreement among diplomats even as other nations involved suggested challenges remain. (Iranian Presidency Office via AP, File)