This study is raising a question about legitimacy of the concept of 'Humanitarian Military Intervention'. The main aim of this study is to quantify the 'humanitarian motives and means' of all military interventions in the time period of 1945-2005 based on the theoretical propositions of the Just War Theory. More particularly, this study concentrates on quantification of the 'jus ad bellum' Just War Theory criteria of 'just cause', 'just intent', 'just authority', 'last resort', 'proportionality', and a reasonable 'probability of success' that constitute a generally acknowledged robust ethical model for considering whether the 'motives and means' of any act of war can be considered 'just', having an overall intent to regulate and restrain the use of violence.