This open access book discusses conditions of conflict resolution over the Russo-Ukrainian War and analyzes requirements for long-term durable peace for Ukraine. What are the impacts of the Russo-Ukrainian War? Do we really know them? The authors examine this question from various perspective including conflict resolution theories, international relations theories, geopolitical theories, domestic and regional politics, regional security system, public opinion and national identity of Ukraine, etc. In so doing, the authors identify the war as a complex crux of many theoretical and practical issues like the merger of the Donbas War from 2014 with the full-scale invasion by Russia in Ukraine as a typical example of "internationalized internal-wars". The authors also seek to develop their findings to ask a question, what are the agendas for durable peace for Ukraine? The authors argue that the agendas should include ripeness theory, security guarantees, deterrence mechanisms, geopolitical arrangements, domestic national identity formation, etc. The authors do not necessarily address the question about the way the war can be terminated, while the mode of the termination is within the scope of their investigation. In any case, however, the authors seek to highlight the basic framework for durable peace in Ukraine.