I still think countries are more likely to launch attacks if there is less of a chance of losing the soldiers that we have put time and money into training.
There are already systems that can fly around a battle field picking out targets on their own. You just give them a patrol zone and a type of target and they 'loiter' until they detect a selected target.
Most countries have UAV's. Most have basic stealth. Most have chemical weapons. It it the evolution of man. Sad but true.
God, I never heard myself sound like that. War is needed sometimes. Once again, sad but true.