Dogs are animals, and as animals, we can never really predict their behaviors. Does this mean he will attack your kids because of the trauma of the fight? Not necessarily, but can we can ascertain this? No, because we never know how dogs may react. For safety, your kids should never be around your dog unsupervised, and they should never be allowed to "do things a dog might not like", regardless of whether there was a recent attack or not, regardless of breed, regardless of how long the dog has been owned, regardless of size. I am sorry but unfortunately I cannot predict how your recently rescued dog will react, every dog is an individual and responds differently to stress.