伊朗退出与美第六轮伊核问题谈判，特朗普：不确定谈判能否举行

Group 1 - Iran has withdrawn from the sixth round of nuclear negotiations with the United States, with the UN Secretary-General's assistant urging political solutions to the existing differences [1] - The U.S. President Trump expressed uncertainty about the existence of Iran's nuclear program following Israel's airstrike on Iran, while negotiations are still scheduled for the 15th [1] - Since April, five rounds of indirect negotiations have taken place, but significant disagreements remain, particularly regarding Iran's uranium enrichment activities [1] Group 2 - Trump warned Iran that if an agreement is not reached, the next wave of strikes will be "more brutal," emphasizing that Iran must reach a nuclear deal before being "totally destroyed" [2] - Trump indicated that there may still be an opportunity for an agreement, suggesting that Iranian officials have reached out to him [3] - U.S. military resources are being mobilized in response to the escalation of conflict between Israel and Iran, with naval assets being repositioned in the eastern Mediterranean [4][5] Group 3 - U.S. officials stated that the Trump administration still hopes to negotiate with Iran and clarified that the U.S. did not participate in or assist the Israeli strike [6]