have moved on to this city, voronezh, and the reason they have done that is by going up this m4 motorway which links rostov on don up motorway which links rostov on don up to voronezh and the bbc verify team have confirmed that video we have been showing off that fire at the oil depot there. also, bbc russian sources say the wagner mercenaries could be in control of some military sites in voronezh. why is that the city also key to wagner? if you look at the map, rostov on don is about halfway from moscow. the uk, the minister of defence in the uk, so probably the wagner ultimate aim is to get to moscow and they could do that using this m4 motorway which runs all the way. we think it is about an eight hour drive to voronezh from rostov on don and about the same to moscow and again at the bbc verify team have confirmed there is in this region a military convoy of what we