ANKARA (Reuters) - The European Union's foreign policy chief Catherine Ashton said on Wednesday she was "cautiously optimistic" about nuclear talks with Iran in Kazakhstan on April 5-6, but said it was vital that Tehran responded to an offer put forward by major powers.
"I remain always cautiously optimistic. But I am also very clear that it is very important that we do get a response (from Iran)," Ashton told reporters in the Turkish capital when asked about the talks in Almaty.
(Reporting by Parisa Hafezi; Writing by Jonathon Burch; Editing by Alison Williams)
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