Senior officials from the International Atomic Energy Agency (IAEA) will meet with Iranian counterparts in Tehran on December 13. The IAEA is prepared to visit a building located at Parchin, a site that Iran says is a conventional military facility but where the IAEA believes Tehran may have carried out tests related to the development of nuclear arms.

If the IAEA does not ask questions about what happened at Parchin and some other sites where it believes Iran carried out nuclear-weapons-related work in the past, it will be easier for Iran to cut a deal with the United States and other powers to end the Iranian nuclear crisis. But such an agreement with the five permanent members of the UN Security Council and Germany (P5+1) will be less effective in detecting whether Iran in the future is secretly developing nuclear arms.

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