Well, yes, but it's hard to see what their target is other than just WWII style use of artillery to shell cities willy-nilly.
Dunno. Can’t answer that.
This might have some answer(s) - currently listening to it now.
‘Russia Acts to End Ukraine Ingulets Bridgehead; Deploys 3rd Army to Donbass’
https://www.youtube.com/watch?v=k6rrikmRckI