There shouldn't be any ambiguity about that, you have military forces that are led by active duty Russian military personnel. Russian officers are embedded through the chain of command down to the company level. Russia pays for contract soldiers to then fill out the whole military force and this goes to a Russian firm -- that then hires the soldiers and provides them to the Donbas. The training, the equipment, the troop rotations, the supplies -- all of this comes directly from Russia.
