The book presents the concept of military-economic cycles, revealing their essence, identifying the actual forms of military-economic cyclicality at all historical stages of social development; substantiating the geopolitical nature of military-economic cycles and their global scale in the conditions of the capitalist world-system. This concept substantiates the existence and reveals the essence of a special local-global form of military-economic cycles, unfolding in the political-economic systems of Russia and Germany since the second half of the XIX century and became the catalysts of world wars in the XX century. The role of domestic political, foreign policy, institutional cycles of the United States - the leader of the modern capitalist world-system - in the deployment of global military-economic cycles in the XX-XXI centuries is also shown. The existence of domestic political cycles in Ukraine, which became the basis for its inclusion in the global military-economic cyclicality as a space of localisation of geopolitical contradictions resolution, is substantiated.