Why, Jon Carry? Why must they?
It seems to me that Russia has complete freedom of action here, that except for indigenous forces there can be no meaningful opposition to Russia's will in this situation, and to say otherwise is potentially destabilizing.
“...except for indigenous forces...”
Being of Ukrainian descent myself, I can tell you this - they’re nobody to mess with or take lightly.
Pissed-off Ukies with modern automatic weapons can seriously ruin your day... and that’s just when they LIKE you...