@sigintel

It is unlikely that Russians will advance at night. They will be sitting ducks. They dont have the fancy night vision for every troop, and it is easy for Georgians who know their own terrain to set up ambushes. They will likely spend the night in a defensive perimeter in Gori, and have teams take out Georgian artillery in the hills, maybe thats why they hesitated to go in. This also gives them time to gather more info about possible Western response to adjust their actions accordingly.