Since the second half of the 20th century the notion of security underwent changes. Gradually there are ‘fresh theories’ coming to the fore reflecting these changes. They cast doubt on traditional political “beliefs”. The notion of sovereignty as established by Westphalian peace order is slowly loosing its leverage as the principle of non-intervention is invalid when certain country commits grave violation of the international law. Hence, such concepts emerge as Humanitarian Intervention, Responsibility to Protect –its developed version. These and alike concepts among others emphasize the legitimacy of cause and authority as well as right intention for the use of military force as a last resort for serving the just cause.