For realist international-political theory, international relations are the arena of the eternal struggle for power and peace. Political realists of all provenience agree that the relations among nations are, as Martin Wight famously declared, the "realm of recurrence and repetition."¹ Here, however, their consensus ceases. Over the course of the past five decades or so, the practice and underlying logic of international relations may, indeed, not have changed dramatically. But what certainly has changed is the way how political realists theorize and explain the broad patterns of politics among nations and the underlying reasons and causes of its tragedies. This change of politico-theoretical perspective within realism has led to the division of political realism into dichotomous camps: classical realism versus neorealism, human-nature realism versus structural realism, evil realism versus tragic realism, and so forth.