Idaho Statutes Title 19. Criminal Procedure § 19-202. Resistance by threatened party

(1) Resistance sufficient to prevent the offense may be made by the person about to be injured:

(2) The defensive display or declaration of a firearm by a person is justified when and to the extent a reasonable person would believe that physical force is necessary to protect the person or another person against the use or attempted use of unlawful physical force, including deadly force. The provisions of this subsection do not apply to someone who intentionally provokes another person to use or attempt to use unlawful physical force or deadly physical force. For purposes of this section, “defensive display or declaration of a firearm” shall include:

(3) The provisions of this section do not require a defensive display or declaration of a firearm before the use of physical force or deadly physical force, or threat of physical force or deadly physical force, by a person who is otherwise justified in the use or threatened use of physical force or deadly physical force.

(4) A person acting pursuant to this section may use such degree and extent of force as would appear to be reasonably necessary to prevent the threatened injury. Reasonableness is to be judged from the viewpoint of a reasonable person placed in the same position and seeing and knowing what the person then saw and knew without the benefit of hindsight.