Group 1 - Ukraine is targeting Russian oil infrastructure, including oil refineries and pipelines, with recent strikes on the Druzhba oil station in Bryansk [1][5] - A drone attack on the oil station in Unetcha resulted in significant fires, with satellite imagery detecting multiple fire points, indicating substantial damage [3][5] - The Druzhba pipeline is a critical node for Russian energy exports to Europe, particularly affecting Hungary and Slovakia, which still rely on Russian oil [5] Group 2 - Continuous attacks on Russian energy systems by Ukraine are expected to have a cascading effect, with previous strikes in January causing a temporary halt in Druzhba pipeline operations [7] - Recent airstrikes also targeted an oil station in occupied Luhansk, resulting in secondary explosions and casualties among Russian troops [9] - The Ukrainian military has been actively disrupting Russian logistics, including strikes on a major drone manufacturing facility near Kazan [11][13]