一队人到北京后，伊朗代表对美硬气划红线，特朗普：必须加税25%

Core Viewpoint - The recent face-to-face negotiations between the U.S. and Iran in Muscat, Oman, ended without significant progress, as Iran firmly rejected key U.S. demands regarding nuclear enrichment, missile programs, and support for regional proxies [1][4][9]. Group 1: U.S. Demands and Iran's Response - The U.S. presented three main demands to Iran: halt uranium enrichment activities, limit ballistic missile programs, and cease support for regional proxies, which Iran categorically rejected [1][5]. - Iran expressed willingness to negotiate on nuclear issues but firmly stated that its missile program is non-negotiable, highlighting its importance to national defense [3][5]. - Iran's representatives displayed confidence during negotiations, emphasizing their unwillingness to compromise on core issues, particularly missile development [5][9]. Group 2: Diplomatic Context and Support - Iran's recent diplomatic engagement with China provided additional strategic support, as China opposed unilateral sanctions and promised to facilitate dialogue between the U.S. and Iran [7]. - Iran indicated a limited flexibility regarding uranium enrichment levels and purity, contingent upon the U.S. lifting sanctions on banking and oil sectors and withdrawing military assets from the region [7][11]. Group 3: U.S. Strategy and Economic Measures - The U.S. adopted a confrontational stance, imposing a 25% tariff on any country engaging in business with Iran, which reflects a broader strategy of economic pressure rather than genuine negotiation [4][9][11]. - The U.S. also announced sanctions on 15 entities and 14 vessels related to Iranian oil trade, indicating a dual approach of negotiation and economic coercion [11][13]. Group 4: Future Implications - The ongoing U.S.-Iran tensions suggest that the negotiations may not yield fruitful results, as both sides maintain clear and opposing positions on critical issues [13][14]. - The dynamics of the Middle East peace process are unlikely to shift without mutual respect for core interests, indicating that the U.S. approach may hinder rather than help resolution efforts [14].