Stand-your-ground laws say that if a person is confronted by danger he has no duty to retreat, though good sense may advise that he do so. Or, he can play John Wayne and the law will have his back.
Such laws entitle A to kill B if he “reasonably believes “ that killing B is “necessary” to save his own life. Such laws speak with forked tongue. For how can A reasonably believe it was necessary to kill B if A could have avoided such a necessity by jumping on his horse and riding off? It only makes sense if your mind lives in Dodge City.