Russia will struggle to rapidly redeploy the forces it has withdrawn from the area around Ukrainian capital Kyiv to the Donbas region in the east as units need reconstituting and re-equipping, a Western official said on Wednesday. The official said the withdrawal of Russian forces from the north of Kiev and around Chernihiv was largely complete, but Russia would need “some considerable period of time in order to reconstitute, refurbish, re-equip and integrate new troops into those formations.”