乌克兰总统泽连斯基：确定加入欧盟的日期至关重要

Group 1 - The core viewpoint is that Ukrainian President Zelensky emphasizes the importance of continued U.S. involvement in negotiations and increased European participation for Ukraine's EU membership process [1] - Zelensky states that determining a date for Ukraine's EU membership is crucial, as it will prevent Russian President Putin from obstructing this process post-war [1]