Abstract
The notion of 'just war' can be considered as a moral philosophy of the War debating the legitimacy of wars and the way wars are made. The existence of just wars thus supposes that violence can be ethical. However, it has to be underlined that even for the just wars theoreticians, war is never good per se, it remains something bad, with painful consequences, and it can only be justified as a means to remedy another bad situation. Questioning the existence of just wars is particularly relevant today insofar as this theory has become "fashionable", especially since the attacks of 9-11. The whole war on terrorism that has followed these attacks is indeed always defined as a just war. That will have to be discussed. To analyze this theory, it is first essential to understand precisely its classical and historical definition and then, to take a look at the recent evolutions of the doctrine and to wonder in what sense it can correspond to recent wars.
