中、美、英、加、法等国发布安全提醒，美双航母就位战争风险“迫近”，特朗普就伊朗问题释放最新信号

Group 1 - The core message indicates that U.S. President Trump is signaling a desire for negotiations with Iran while also suggesting the possibility of military action if necessary, amidst rising tensions and military deployments in the region [1][5][7] - The U.S. has deployed two aircraft carriers, the "Ford" and "Lincoln," in the Middle East, indicating an increase in military presence and pressure on Iran [5][10] - Multiple countries, including Israel, Canada, and several European nations, have issued security alerts and travel warnings due to the escalating situation, advising their citizens to evacuate or avoid the region [2][4] Group 2 - The third round of indirect negotiations between the U.S. and Iran recently concluded, with a new round of technical discussions scheduled for March 2 in Vienna, although significant differences remain between the two parties [7][10] - The U.S. demands that Iran dismantle key nuclear facilities and transfer remaining enriched uranium to the U.S., while Iran insists on retaining its right to peaceful nuclear technology and has proposed a temporary suspension of uranium enrichment [7][10] - The International Atomic Energy Agency (IAEA) has reported limitations in verifying Iran's enriched uranium stockpile and activities, complicating the situation further [8]