泽连斯基：不排除美国未来可能退出乌俄会谈

Group 1 - The core viewpoint of the article is that Ukraine and the United States have initiated preliminary discussions regarding a bilateral free trade agreement [1] - Ukrainian President Zelensky shared a vision with U.S. President Trump on how to respond to Russian actions [1] - A Ukrainian delegation is scheduled to visit the U.S. from September to October for talks on economic and military issues [1] Group 2 - There is a possibility that the U.S. may withdraw from the Ukraine-Russia talks in the future, but this has not occurred yet [1]