Iran says it is willing to discuss any issue with the UN nuclear watchdog but maintains it has already answered all outstanding questions about its controversial nuclear program. Iran's Foreign Ministry spokesman Mohammad Ali Hosseini said Sunday the international community was wrong to dispute the answers Teheran has provided to the Vienna-based International Atomic Energy Agency. He spoke at his weekly media briefing. The IAEA said Wednesday that it had reached a "milestone" agreement with Iran that aims to provide answers about allegations Teheran tried to develop nuclear weapons under cover of a peaceful atomic program. Iran's official news agency has said the deputy chief of the IAEA, Olli Heinonen, will revisit Iran on Monday to discuss its nuclear program.