俄罗斯宣布重大战果！

Group 1 - The Russian Ministry of Defense announced that Kupiansk is currently under the control of the Russian Western Group of Forces, with approximately 3,500 Ukrainian soldiers surrounded nearby [3] - Ukrainian President Zelensky stated that on December 27, Russian forces launched a large-scale airstrike on Kyiv, resulting in 1 death and 28 injuries, targeting energy and civilian infrastructure [5][6] - The Ukrainian Energy Ministry reported widespread power outages in Kyiv and surrounding regions due to ongoing Russian attacks on the energy system [7][8] Group 2 - President Zelensky emphasized that Ukraine has clear "red lines" regarding territorial integrity and the Zaporizhzhia nuclear power plant, stating that Ukraine will not legally recognize Russian occupation [9] - Zelensky expressed the need for legally binding security guarantees from the U.S. and plans to discuss this with President Trump during their upcoming meeting [10] - President Trump remarked that Zelensky has nothing without his approval, positioning himself as a key figure in the potential peace negotiations between Ukraine and Russia [12]