by William M. Reilly UNITED NATIONS, Sept. 23 (Xinhua) -- The five permanent members of the UN Security Council, plus Germany, said Wednesday they plan to enter into talks on Oct. 1 with Iran on its nuclear development program. No site or agenda has been set. The P5 -- Britain, China, France, Russia and the United States -- and Germany met on the sidelines of the General Assembly's annual general debate at the UN Headquarters in New York. Attending the meeting were British Foreign Secretary David Miliband, the foreign ministers of China, France and Russia, Yang Jiechi, Bernard Kouchner and Sergey Lavrov, German state secretary of foreign affairs Reinhard Silberberg, and U.S. Secretary of State Hillary Clinton. The European Union's high representative for foreign and security affairs, Javier Solana, also attended the session. Their announcement was made outside a basement conference room just below where Iranian President Mahmoud Ahmadinejad was waiting to speak to the General Assembly. In his speech, he made no mention of the crisis caused by his nation's enrichment of nuclear fuel, which many nations, especially European Union members, fear is part of a military program. Tehran denies the charge, saying the fuel enrichment is strictly for peaceful purposes. Only last week the administration of U.S. President Barack Obama decided to shelve a missile shield program in Eastern Europe instituted by the administration of former U.S. President George W. Bush, which had greatly annoyed Russia. The U.S. said the planned system was to protect the West from Iranian missile attack. Also last week Solana brokered by phone a meeting between Iran and council members, including the United States. Obama had said since coming to office he believed in a two-track approach -- both sanction and engagement. 'We've had a very constructive and useful meeting,' said Miliband for the group, also known as the E3+3 for the three members of the European Union plus the three members of the Security Council. Lavrov and Yang excused themselves and left before Miliband started reading the statement All participants said they endorsed the statement. 'Iran's nuclear program remains of serious concern to the international community,' the statement said. 'We acknowledge the recent measures taken by Iran regarding its cooperation with the IAEA (the UN's International Atomic Energy Agency), and encourage Iran to cooperate further with the IAEA to resolve the remaining issues which need to be clarified to exclude the possibility of military dimensions to Iran's nuclear program,' the statement said. 'We urge Iran to implement all measures by the IAEA and the UN Security Council to build confidence in the exclusively peaceful nature of its nuclear program at the earliest possible date,' Miliband read out from the prepared statement. 'We have consistently stated that we want to negotiate a comprehensive long-term agreement to resolve the Iranian nuclear issue,' he said. 'But this can only be achieved if both sides are willing to approach these matters in a spirit of mutual respect and are committed to looking for solutions going forward.' The statement went on to say the P5+1 'are united in our willingness' to work with Iran on these matters, and said an Oct. 1 meeting 'will provide an opportunity to seek a comprehensive, long-term and appropriate solution to the Iranian nuclear issue through dialogue and negotiation. We expect a serious response from Iran.' 