For example, the rules during my time stated that if an Arab throws a rock at you (big, heavy, can break your skull apart), you are not allowed to shoot. If they have a knife and are charging from a distance, you are still not allowed to shoot. If they have a molatov cocktail, but are at a distance where it can't hurt you, you are not allowed to shoot. If you shoot and kill in these situations, you will be tried before a military court for murder and jailed.
The Israel you talk about is an anti-semitic PR fantasy that holds no resemblance to the reality of what goes on there. Part of my job taking care of terrorists with blood on their hands that we'd arrested was to ensure they got hot bloody food while we took care of them.
Not exactly a world of massacres and ethnic cleansing. Sorry, your rant is just rhetoric.