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Iranian officials say nuclear chief Mohammad Eslami is not expected to attend the annual IAEA General Conference in Vienna, breaking years of participation, after UN sanctions barred him from international travel. The move underscores tightening restrictions on Iran's nuclear leadership as its program remains under intense international scrutiny. The absence comes amid heightened tension between Tehran and the IAEA following recent strikes on Iranian nuclear facilities and disputes over inspection access, further complicating diplomatic engagement between Iran and the international nuclear watchdog.