Wars and Fatal Illusions of Defeatability as a Threat. Metatheoretical Observations and Desiderata of a Contemporary Philosophy of Martial Violence This essay deals with the question how war threatens us even when peace seems to reign. Refering to Heraklit, Kant, and recent theories of war, the author takes answers to this question into account especially with respect to the problem if it is possible to keep in check illusions which make us believe that one can get rid of enmity by way of 'final solutions'.