The subject of this article is the Orthodox Christianity’s approach to war. Christians of other denomination have developed an elaborate theory of war, so-called “Just War Theory” (JWT), which has also been accepted by non-Christians and even secular thinkers regarding the nature and justification of war. A vast literature has been produced in a dire attempt to render perfect the world by insisting on the claim that war is the act of punishment for breaking the law. The result is an epistemological ease from which everything seems evident in advance including who is right and who at fault, who is and who is not favored by God. By removing from war an essential feature – that it is a form of conflict – JWT takes away the concept of reciprocity and introduces an in advance declared inequality which enables removal of uncertainty about the war’s outcome. In Orthodox Christianity, the situation is different. With still live debate whether to persevere or abandon original Christian pacifism, for Orthodox Christianity, war is always a combination of cataclysm and temptation and far less Manichean than anything present in JWT. The aim of war is peace; but, however necessary, justice is an insufficient condition for justification. The difference between “justness” and “justification” is preserved through the uncertainty whom God, at war’s end, loves more, because both victors and vanquished remain and continue to be in His grace. Losing a war, as such, does not turn the vanquished into criminals, nor does victory give the vanquisher the right of revenge for defending oneself. The latter approach to war has significant potentialities: preserving the distinction of ius ad bellum and ius in bello, preserving reciprocity, mutual respect and trust, impossibility of incrimination of war per se, the possibility of honorable defeat, etc.