In Oklahoma a person has the right to "expect absolute safety within their own homes or places of business." Use of deadly force is permitted when in defense of self or others from the imminent threat of death or great bodily harm.
Castle Laws are laws that address the use of force when defending one's self inside their home, or on their property. Some states expand this to vehicles, and the person's place of work. Castle Laws generally include: the places where this law applies, the requirements fro use of deadly force, if there is a duty to retreat, the amount of force that maybe used in defending one's self or others. These vary widely from state to state.