Footage released today by Ukraine’s General Staff shows a series of drone strikes conducted on December 14 against the Russian Air Force’s 568th Anti-Aircraft Missile Regiment near Raivka in Russia’s Belgorod Oblast. The operation was carried out by Ukraine’s 15th Artillery Reconnaissance Brigade, known as the “Black Forest” Brigade, and resulted in the destruction of two fully loaded launchers from an S-400 surface-to-air missile battery.