  Just war pacifists generally claim that the negative consequences of modern war make war unjustifiable. Just war pacifism might be more narrowly focused on the immorality of nuclear war and nuclear deterrence strategy. But those who reject nuclear warfare might still allow that limited defensive or even humanitarian wars can be fought provided we could be sure that just war principles were respected. Perhaps the most important conclusion of just war pacifism is that the burden of proof rests on the proponent of war: for just war pacifists who base their conclusions on consequentialist reasoning, war is presumed to produce negative consequences until is proved otherwise.