Russian mercenaries used no mortars or other Minsk-banned weapoonry in Donbas on December 21. However, the combat situation remains complicated.
RPG and machinegun fire was reported in Novoselivka II and Pisky. Firefights occurred near Hnutove and Vodyane. Avdiivka's industrial zone took fire from AA guns, RPGs, heavy-machineguns and small arms.