Abstract:Under the mediation of Europe,the negotiations aimed at resuming the implementation of the Joint Comprehensive Plan of Action (JCPOA) were held in Vienna. Nevertheless,due to the excessive differences between the United States and Iran,the negotiations have been stalled for a long time. The Biden administration has shown a willingness to return to the JCOPA,but has been strongly blocked by Republicans and Israel. As an intermediary in the Iranian nuclear talks,Europe can neither be independent externally nor united internally,which limits its ability to mediate the differences between the parties. The Ukraine Crisis,domestic protests in Iran and other events have aggravated the complexity of the situation,making the trend and outlook of the Iranian nuclear negotiations even more uncertain. Through its “resistance economy” and “Look East” policies,Iran has discovered a new path for economy and diplomacy,actively improved relations with neighboring countries. It has achieved the triple effect of economic development,security environment improvement and bringing pressure to the West. In the long run,a peaceful settlement of the Iranian nuclear issue still serves the interests of all relevant parties,and there is still room for cooperation under the JCPOA. Whereas,the variable for the final settlement of the Iranian nuclear issue is not the US-Iran relationship,but the transformation of the international system.
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