In today's world, we can point to many international disputes and interstate conflicts fueled by past events. Historical resentments or memories of past suffering or fame are often used to justify political, economic and even territorial demands. Inter-state disputes and historical conflicts should be understood as evidence of political and social tensions related to active, serious differences in the assessment of the common past. The book explains the role of such conflicts in international relations and suggests ways of classifying them. It presents examples of the internationally relevant instrumentalisation of history from different regions of the world and outlines ways of overcoming them.