鲁比奥退出乌克兰问题伦敦会谈，美媒猜测：或因乌方不愿讨论美方提议

Group 1 - The high-level talks originally scheduled for March 23 in London to discuss ending the Russia-Ukraine conflict have been postponed, with Ukraine's Foreign Minister still attending for bilateral discussions [1] - The U.S. Secretary of State Rubio canceled his participation in the London talks due to scheduling conflicts, which indicates a lack of alignment between the U.S. and Ukraine on the issue [1][2] - The British Defense Minister stated that the talks would focus on specific details regarding a ceasefire and ensuring long-term peace, continuing discussions from a previous meeting in Paris [1] Group 2 - Speculation is growing that the U.S. may pressure Ukraine to recognize some occupied territories as belonging to Russia as part of a potential peace agreement, which Ukraine's President Zelensky has firmly rejected [2] - A French official suggested that any immediate ceasefire should be based on the current contact lines, indicating a preference for a pragmatic approach to negotiations [2] - The U.S. White House announced that a special envoy will visit Russia for new discussions on the Ukraine issue, highlighting ongoing diplomatic efforts [2]