Abstract
This article explores the issue of jus contra bellum as a particular development within just war thought. At its heart, the jus contra bellum amounts to an attempt to apply the principles of jus in bello (discrimination and proportionality) in order to negate the jus ad bellum. This approach was rather prevalent throughout the Cold War era, as concerns over the prospective use of nuclear weapons facilitated an increasingly sceptical attitude towards the use of force. Whereas the vast majority of just war thinkers have tended to overlook this phenomenon, James Turner Johnson has adeptly recognised the perils of jus contra bellum, and its rather disastrous implications for just war thought. In this respect, Johnson's analysis of this issue constitutes one of his most significant contributions to the tradition. However, as this article will suggest, his assessment of this approach, and consequent efforts to counter it, do not go far enough. As will be noted, the roots of the jus contra bellum can be traced to the prevailing structure of just war thought – a structure which has been consistently championed by virtually every just war thinker.