“分割顿巴斯”提议遇阻，北约秘书长赴美会谈，美俄元首会晤生变引发猜测

Core Points - The planned meeting between US President Trump and Russian President Putin in Budapest has been postponed due to fundamental disagreements over the ceasefire in Ukraine [1][3] - The US government has shifted its stance on the Russia-Ukraine negotiations multiple times since January, with recent developments indicating a return to previous demands for an immediate ceasefire along current front lines [3][4] - European leaders have expressed relief over the postponement of the meeting, as they seek to align the US with their position on the Ukraine issue [5][6] Group 1: Meeting Postponement - Trump stated he does not want to hold a meaningless meeting and will decide on the meeting in the coming days [3] - Russian officials indicated that the postponement requires high-level intervention and proper preparation [3][4] - The postponement is linked to a recent phone call between US Secretary of State Rubio and Russian Foreign Minister Lavrov, where Russia rejected the US proposal for a ceasefire along current lines [3][4] Group 2: European Response - European leaders, including those from the UK, France, and Germany, issued a joint statement supporting the US's call for an immediate ceasefire and freezing of current front lines as a negotiation starting point [5][6] - European countries are exploring the use of frozen Russian assets to support Ukraine, with discussions planned in upcoming meetings [6][7] - A 12-point plan is being developed by European nations in collaboration with Ukraine to facilitate a ceasefire and address humanitarian issues [6][7] Group 3: Ongoing Conflict - The conflict continues with both sides attacking each other's energy infrastructure, particularly as winter approaches [8] - Ukraine has reported successful strikes against Russian military and industrial targets, indicating a shift in tactics by Russia to more precise attacks [8][9] - Lavrov accused the EU of encouraging Ukraine to attack Russian civilian infrastructure, highlighting the complexities of the ongoing negotiations [9]