Iran and six world powers on Thursday announced that they have agreed on a plan meant to produce a comprehensive deal that reduces concerns about Tehran’s nuclear ambitions. Officials of both sides described their plans as “very productive.” In a joint statement, they said the next round of negotiations would begin in Vienna on March. 17. “We’ve identified the issues we need to address for a comprehensive and final agreement,” said Catherine Ashton, the EU’s top diplomat who convened the talks between Iran and the six powers – the United States, Russia, China, Britain, France and Germany . “It won’t be easy, but we’ve gotten off to a good start,” she said in a statement later read in Farsi by Iranian Foreign Minister Mohammad Javad Zarif. Expectations of major progress from the three days of talks in Vienna were modest because the two sides […]