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Group 1: Military Actions - Ukraine's military has conducted large-scale remote attacks on multiple significant military facilities within Russia, marking a record in both range and depth of operations [1] - The Ukrainian special operations forces successfully targeted the Kirishi oil refinery, which has an annual processing capacity of 17 million tons of crude oil, a key fuel supply base for Russia's northwest region [1] - A long-range drone strike was executed against the Metaflaks chemical plant in Cuba, which produces urea and synthetic ammonia, both of which can be used for agricultural and military purposes [3] Group 2: Impact on Russian Military Capabilities - The Ukrainian Navy successfully struck a naval communications center in Sevastopol, which is crucial for the operational command and intelligence transmission of the Russian Black Sea Fleet [4] - Continuous drone and missile attacks by Ukraine have significantly weakened the operational capabilities of the Russian Navy in the northwestern Black Sea region [4] Group 3: Disruption of Supply Lines - Ukrainian special forces have carried out sabotage operations along key railway lines, including an explosion that derailed a freight train, resulting in casualties among Russian railway workers [5] - Another attack on a fuel transport train caused multiple tank cars to catch fire, aimed at disrupting the supply routes for Russian military logistics [6] Group 4: Regional Security Responses - Romania and Poland have heightened their border defenses in response to the escalating conflict, with Romania's defense ministry reporting an unidentified drone entering its airspace [6] - Poland temporarily closed Lublin airport and coordinated with NATO allies for joint patrols in the eastern border airspace, demonstrating rapid crisis response capabilities [6]