when is the use of deadly force justified
Deadly force Deadly force, also known as lethal force, is force that is likely to cause either serious bodily injury or death to another person. In most jurisdictions, the use of deadly force is justified only under conditions of extreme necessity as a last resort, when all lesser means have failed or cannot reasonably be employed.
Salvor Hardin His best-known maxim, "Violence is the last refuge of the incompetent", became one of Isaac Asimov's favorite sayings.[1]