特朗普重申伊朗不能拥有核武器，并对伊方在核问题谈判中表现不满意：我不高兴，但谈判将继续，只是有时候不得不打

Group 1 - The core viewpoint is that President Trump is dissatisfied with the progress of nuclear negotiations with Iran and emphasizes the need for a strong stance in talks [1][2] - Trump expresses a desire for a meaningful agreement with Iran while acknowledging the challenges and dangers of negotiations [2][3] - The U.S. maintains a firm position that Iran should not possess nuclear weapons and should not engage in uranium enrichment [1] Group 2 - Multiple countries, including Cyprus and Belgium, are advising their citizens to avoid travel to Iran and other parts of the Middle East due to escalating security concerns [4] - The warnings from various nations reflect a broader concern about the instability in the region and the potential risks to travelers [4]