Iran has provided a “substantive volume” of information to the U.N. atomic agency on allegations that it worked on nuclear arms, the agency’s chief said Tuesday, but declined to characterize the value of the documents. Yukiya Amano said it would be premature to say how useful the information given by Iran last week would be in the investigation being conducted by his International Atomic Energy Agency . “We need to see the whole picture to have an assessment,” he told reporters on the sidelines of a meeting of the IAEA’s 35-nation board, convened to seek approval — and funds — for the agency’s assigned task of […]