Normally, it seems that there is no way, because as soon as you put an object in the folder"GroundObject", you issue permission for its activity in the game. But there is a way, and it is also related to the nationality of that object. or an independent nationality, then you can limit the nationalities in different territories(Terrains) in such a way that they do not include the nationality of the Taliban. In this way, the Taliban fighters or terrorists will not be available, and any kind of aircraft, ground or sea vehicles of the Taliban will also be eliminated in the same way, but I don't think it is possible to remove only that particular object (human fighter)and for example the Taliban plane in the game...