(Reuters) - World powers have not seen any impact so far from tension withRussiaover the Ukrainian region of Crimea on nuclear talks withIran, a spokesman for the European Union's foreign policy chief said on Tuesday.The powers - the United States,Russia,China,France, Britain andGermany- began a new round of talks on Iran's contested nuclear work on Tuesday in Vienna, a day after Washington and the EU imposed sanctions on Russian officials.
"I haven't seen any negative effect," spokesman Michael Mann told reporters. "We continue our work in a unified fashion".
By Reuters
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