美伊核谈，谈和还是谈崩？

Group 1 - The core point of the article revolves around the resumption of negotiations between the US and Iran in Oman, marking the first formal dialogue since June 2025, amidst escalating tensions and military posturing [1][2][3] - The negotiations were initially planned to take place in Istanbul with the involvement of other Arab nations, but Iran insisted on a more limited format in Oman, reflecting its concerns about external influences [1][3] - The US and Iran have significant differences in their negotiation stances, with the US demanding a complete halt to Iran's uranium enrichment and missile programs, while Iran insists on focusing solely on nuclear issues and lifting sanctions [3][4] Group 2 - The US has employed a dual strategy of sanctions and military presence to exert pressure on Iran, including new sanctions on entities involved in Iranian oil trade and a significant naval buildup in the Persian Gulf [4][5] - Iran is preparing for potential military conflict by adopting asymmetric warfare strategies, including the capability to block the Strait of Hormuz and deploying fast attack boats [6][7] - Both parties are aware that any escalation could have severe implications for regional security and global oil prices, with Iran's leadership indicating a readiness to respond aggressively if negotiations fail [8]