Iran enters the first talks in more than a year on its nuclear ambitions facing world powers more unified in their demand for limits after the disclosure of a covert uranium enrichment plant. The US says it wants the Sept. 31 meeting in Geneva to be the start of a dialogue aimed at ensuring Iran doesn't develop a nuclear weapon. Policy makers are exploring internally what sanctions might be appropriate at the end of the year should talks fail to ensure the nuclear effort is for peaceful ends, as Iran insists. (Bloomberg)

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