"The secretary general welcomes the declaration agreed in Tehran today by the Iranian government and visiting EU foreign ministers regarding the nuclear program of the Islamic Republic of Iran. He encourages the Iranian authorities to further cooperate with the International Atomic Energy Agency (IAEA) to resolve all outstanding issues with the agency.

"The secretary general appreciates the efforts of the government of Iran and the foreign ministers of France, Germany and the United Kingdom in working towards resolving outstanding issues regarding Iran's nuclear program," Annan's spokesman added.

The UN nuclear watchdog expects Iran in the coming days to give a "complete declaration of all its past nuclear activities" following talks in Tehran with the foreign ministers of Britain, France and Germany, IAEA chief Mohamed ElBaradei said earlier in Vienna.

Yielding to international demands for it to prove it is not developing nuclear weapons, Iran agreed to allow tougher inspections of its nuclear sites and to halt uranium enrichment.

In a statement, ElBaradei said he "hopes and expects that in the next few days Iran will deliver to the IAEA a complete declaration of all its past nuclear activities and an official notification of its readiness to conclude an additional protocol" to the nuclear Non-Proliferation Treaty on the snap inspections.

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