In 1925, Russian philosopher Ivan Il'in published a book entitled On Resistance to Evil by Force . The book generated a bitter polemic among @migré Russian thinkers, which constitutes probably the most thorough debate on the justification of the use of force ever conducted among Russian scholars. This paper analyses Il'in's work and places it into the context of Russian history and philosophy. Il'in argued that war was sometimes necessary, but never 'just'. On occasions, the only way of fulfilling one's (...) obligation to resist evil is to fight. At such times one must do so. But one must understand that what one is doing, though necessary, is unjust, because one is always at least partially responsible for the situation which made violence necessary. While not shirking one's responsibilities, it is only by facing up to the guilt of one's deeds that one can prevent war from undermining one's moral equilibrium. This paper shows that most of those who took part in the debate provoked by Il'in's book agreed with the fundamentals of his argument. This fact illustrates that there is a distinctive Russian philosophy regarding the use of force which in important aspects differs from Western just war theory. (shrink)