泽连斯基再赴白宫，“陪同阵容”很豪华

Group 1 - The core viewpoint of the articles is that President Trump is set to meet with Ukrainian President Zelensky, with several European leaders attending to persuade Trump to return to the principle of "ceasefire first, then negotiations" [1][3] - European leaders, including Macron, von der Leyen, and others, are expected to advocate for increased support for Ukraine's armed forces during the meeting [2][3] - Trump's recent shift away from the previously agreed principle has left European leaders in a challenging position, as they aim to emphasize the positive aspect of U.S. security guarantees for Ukraine once an agreement is reached [3][4] Group 2 - The meeting on August 18 is seen as a critical moment for European leaders to negotiate with Trump, who is eager to organize a trilateral summit with Putin and Zelensky [4] - Putin's conditions for ending the Ukraine crisis include the withdrawal of Ukrainian forces from certain regions, which complicates the discussions [4] - The presence of European leaders is expected to create a more pragmatic atmosphere, potentially preventing conflicts during the negotiations [2][3]