There are no military units here (refers to DPR). They (the Ukies) don't shell the DPR units but concentrate on schools and kindergardens in the residential areas. His theory was that the Ukies think that because they shield in the residential areas, DPR will do the same. Kinda logical. And .. he was ethnically an Ukrainian.
An interesting perspective .. I doubt that Graham would have brought this to surface without this 'personal' perspective methinks that Pat can do, although I don't have much knowledge about his work, apart from that one video.