Group 1 - Ukrainian armed forces conducted an attack on the Russian oil pumping station in Nikolayevskoye, halting operations to the "Friendship" oil pipeline [2] - The attack resulted in a fire at the Nikolayevskoye oil pumping station located in Tambov Oblast, Russia [2] - The "Friendship" pipeline is a major oil transport system from Russia to Central and Eastern Europe, with reduced actual oil flow despite EU sanctions exemptions [2]