伊核焦点“是否允许伊朗保留铀浓缩”，美国再出“罗生门”，伊朗或将拒绝美方案

Group 1 - The core issue revolves around Iran's potential rejection of the U.S. nuclear agreement proposal, which allows limited low-concentration uranium enrichment for an unspecified period [1] - The U.S. proposal contrasts sharply with the public stance of U.S. officials, who have insisted on a complete dismantling of Iran's nuclear facilities and no uranium enrichment [1][2] - Iran has expressed its firm stance on retaining its uranium enrichment activities, indicating no willingness to compromise on this critical issue [2][3] Group 2 - An Iranian senior diplomat revealed that Iran is drafting a negative response to the U.S. proposal, which may be interpreted as a rejection [3] - The breakdown of negotiations could trigger a series of dangerous repercussions, including the reimplementation of UN sanctions by European countries and potential military strikes by the U.S. and Israel against Iran's nuclear facilities [3] - There are indications that Iran may respond with restraint to leave room for further negotiations, with a possible compromise being the U.S. allowing uranium enrichment in principle, but Iran not conducting it within its territory for an indefinite period [3][4] Group 3 - The U.S. had previously proposed allowing Iran to join a regional uranium enrichment alliance with countries like Saudi Arabia, but this would not take place on Iranian soil [4] - Iran's parliament committee chairman emphasized that any proposal ignoring the principle of enrichment is completely unacceptable and not worth considering [5]