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Iran's Zarif on nuclear talks: 'We owe it to the world to try'
As Iran nuclear talks search for a final agreement, Iran's foreign minister Javad Zarif expresses hope. Despite opposition by hardliners in Tehran and Washington, Zarif says that not to reach an agreement would be a great setback. "We owe it to our people, owe it to the world, to try," he told NBC's Ann Curry in Vienna.