In Vienna, the U.S. and its European allies again condemned Iran's nuclear activities, noting that Iran has crossed or nearly crossed the threshold for assembling enough fissile material to make one atomic bomb. 'This ongoing enrichment activity...moves Iran closer to a dangerous and destabilizing possible breakout capacity,' Glyn Davies, U.S. ambassador to the International Atomic Energy Agency, told a meeting of the U.N. agencies Governing Board. 'We have serious concerns that Iran is deliberately attempting, at a minimum, to preserve a nuclear weapons option.' Western nations, along with Israel, suspect Iran is preparing to build nuclear weapons under the guise of a civilian energy program, a charge Iran vehemently denies. Israel remains the Middle East's sole nuclear power, with an arsenal of roughly 200 warheads. World powers fear a nuclear Iran could further unsettle an already volatile region and trigger an arms race. The U.N. Security Council repeatedly has called on Iran to halt sensitive nuclear activity until it clears up questions about the nature of its nuclear enrichment program. The U.S., France, Britain and Germany have pushed for an increase in U.N. economic sanctions on Iran, but have been thwarted by veto-bearing Russia and China, who remain economically and politically engaged with Iran. If the West is unable to gather momentum for sanctions at the U.N. General Assembly meeting next week, diplomats say it might try to punish Iran by pursuing strictures at the G-20 summit of world economic powerhouses in Pittsburgh later this month. Details of the Iranian package, handed to diplomats in Tehran late Wednesday, did not publicly emerge by nightfall. Last week, Iran's chief nuclear negotiator Saeed Jalili said it would be an updated version of a proposal submitted last year. That proposal was dismissed by the U.S. and its allies as irrelevant. Ali Asghar Sotanieh, Iran's envoy to the International Atomic Energy Agency in Vienna, said the new proposal would include possible talks on nuclear matters, but did not broach the subject of Iran's nuclear enrichment program. 'It covers all issues of concern and interests inter-alia security, economic cooperation, nuclear nonproliferation and disarmament, energy supply and demands, energy security as well as peaceful applications of nuclear energy,' Soltanieh said in a statement distributed to reporters in Vienna. 'The basis of negotiations would be this package,' he told reporters along the sidelines of the Board of Governors meeting. 'And during the process of negotiations, all parties in an open-minded, pragmatic manner, have to deal with the issues and any parties in any negotiations has the right to reflect their viewpoints and comments on it.' The Obama administration has offered to engage in comprehensive talks with Iran without preconditions. But after years of what international atomic agency chief Mohamed ElBaradei described Wednesday as a 'logjam,' France, Germany and Britain have grown increasingly skeptical about negotiations with Iran, which has brushed aside as forgeries a set of documents that purport to show that it engaged in nuclear experiments consistent with a clandestine weapons program until 2003. 'If this information is real, there is a high probability that Iran nuclear weaponization activities have taken place,' ElBaradei told the board, according to a transcript of his remarks. 'But I should underline `if' three times.' German's ambassador to the atomic agency, Ruediger Luedeking, decried Iran's 'disrespect' for its international obligations. 'This Iranian attitude further reinforces doubts relating to the nature of Iran's nuclear program,' he said, in statement he read on behalf of his country, France and Britain. 'Iran must address the lack of confidence in the exclusively peaceful nature of the Iranian nuclear program. It should build, not reduce, confidence.' Staff writer Daragahi reported from Beirut, Lebanon, and special correspondent Damianova from Vienna. 