though, the track vehicles, and some real -- can really really motor and walk along the roads, the front extends now, a lot of the fighting has been sort of linear along what we call military, if you will, it lines of operation. they can move faster now and what they call general mud, that period is passing. but now you are going to get general winter. and this will be -- this we'll talk about russian prowess. ukrainians can fight and winter as well. >> so, you think it affects russia -- the winter affects russia more because ukraine is fighting on their own territory. >> i think it's a major -- very important. same, ground world war ii, you had german and soviet forces fighting over villages and towns just to stay warm and for the hearth. and ukrainians are fighting in a generally friendly, populated area.