UN nuclear chief: Deal reached with Iran over suspected weapons program The chief of the U.N. nuclear agency said Tuesday that he had reached a deal with Iran on probing suspected work on nuclear weapons and the agreement would "be signed quite soon." Yukiya Amano, of the International Atomic Energy Agency, said some details still needed to be worked out. But he told reporters that Iranian officials say that those will not stand in the way of signing the deal. (A) decision was made to conclude and sign the agreement ... I can say it will be signed quite soon," he said. Amano spoke Tuesday on returning from Tehran, after talks on resuming a long-stalled probe into suspicions that Iran secretly worked on developing nuclear weapons. Israeli military chief: I doubt Iran's 'rational' leadership will make nuclear bomb The investigation has been stalled for more than four years, with Iran saying it has not carried out such experiments. Clash with Iran could see use of huge, new U.S. bomb Iran denies that it is interested in developing nuclear weapons, saying it wants nuclear power only to generate energy and for medical use. Robert Wood, the acting U.S. envoy to the International Atomic Energy Agency, said Tuesday that Iran should act swiftly to allow the IAEA to carry out its work. "While we appreciate the efforts (by the IAEA) to conclude a substantive agreement, we remain concerned by the urgent obligation for Iran to take concrete steps to cooperate fully (with the agency)," Wood said.