俄美乌三方会谈第二日谈判已开始

Group 1 - The core viewpoint of the article is that the trilateral talks between Russia, the United States, and Ukraine are ongoing in Abu Dhabi, focusing on security issues [2] - The negotiations began on February 5, following the format established on February 4, which includes consultations among the three parties and group discussions to further coordinate positions [2] - This meeting is the second round of talks, following the first round held from January 23 to 24, indicating a continued diplomatic effort to address security concerns [2]