突然！俄罗斯，发动大规模袭击！

Group 1 - The core viewpoint of the articles highlights the escalating tensions between Russia and Ukraine, particularly focusing on recent military actions and their implications for regional security [1][2][3][7]. - Ukrainian President Zelensky reported that Russia launched approximately 580 drones and 40 missiles in a nighttime attack, resulting in 3 deaths and dozens of injuries across various regions including Dnipro and Kyiv [2][3]. - The Zaporizhzhia nuclear power plant was targeted by Ukrainian forces, with drones attacking a training center, although no severe damage or casualties were reported [4][5]. Group 2 - The European Union officials condemned Russia's military aircraft entering Estonian airspace as "extremely dangerous" and "unacceptable," prompting NATO to scramble fighter jets for interception [7][8]. - The incident involving Russian aircraft occurred amidst ongoing tensions in the region, with previous reports of drones entering Polish airspace, attributed to Russia, which Russia denied [8]. - The EU plans to discuss collective responses to Russia's actions at an upcoming leaders' meeting in Copenhagen [7].