Purpose: is to anticipate the termination of the Russia-Ukraine war considering the underlying causes on the basis of main war termination theories. Method: comparative analysis, and synthesis. Findings: The length of a war is typically unpredictable due to the intricate interplay of elements that affect its duration. Initial assessments often underestimate the enemy's capabilities, resolve, and adaptability. Understanding these factors can help in devising strategies to prevent or shorten wars. In historical records, the majority of military operations, campaigns, and wars have exceeded their anticipated duration. What causes the wars to linger longer than anticipated? What variables or elements, in general, affect the duration of wars? These are some of the most frequently considered questions by the researchers. In this regard wars need to be categorized based on their features in order to make sense of how long they should last. The scale and ferocity of wars differ. Some wars lasted only a few days, while others lasted for years or even decades. Some wars were fought between two nations, while others involved multiple nations, some others had a worldwide scope. Limited engagements occurred in some wars, while others left massive amounts of destruction in their wake. While many nations rally their entire population for war, some do not believe it is necessary. In the case of the Russia-Ukraine war, the article illustrates the main points of war theories concerning the origins and end of a conflict, supports the connection between them, and emphasizes the variables and elements that influence the duration of the war. The authors try to anticipate the termination of this war based on various factors. Theoretical implications: The paper enhances our understanding of key concepts of theories of war provide a framework to understand the various dynamics and outcomes of conflicts, including how they begin, unfold, and eventually end. The Russia-Ukraine war serves as a contemporary case study to explore these theories in practice. The paper provides new insights for understanding the variables and elements that influence the duration of the war and offer various lenses to comprehend and address the war, suggesting a multifaceted approach that includes military, diplomatic, economic, and socio-cultural strategies. Practical implications: Examining the practical implications of the theories of war in the context of the Russia-Ukraine war involves understanding how these theories translate into real-world strategies and actions that can lead to the termination of the war. The paper highlights that military, diplomatic, economic, and socio-cultural strategies must be integrated to address the complex dynamics of the conflict and pave the way for a sustainable peace. Value: The study offers significant value in understanding, predicting, and potentially resolving wars in the example of Russia-Ukraine war and provides multiple lenses through which to analyze the war, devise strategies, and anticipate outcomes.