Article 2(4) of the UN Charter contains a general prohibition of the use of force.Articles 42 and 51 authorize departures from this prohibition in two circumstances: Disinfectants Security Council authorization and self-defense.These two circumstances are conceptualized as justifications.They provide for legally-warranted Dust Mops departures from the general rule.
As a result, a justified use of force is not wrongful.Justifications are different from excuses where the action remains wrongful, but the wrongdoer may be released from responsibility for the wrongdoing.