Following the invasion of Crimea by Russia, there has been a significant shift in academic focus towards the study of Ukraine. Russia's efforts to establish a new warfront in the Western Balkans have drawn attention to the developments in the region. This paper offers a comparative analysis of the narratives put forth by Russia concerning Ukraine and Serbia's perspectives on Kosovo. Both Russia and Serbia have constructed fake narratives that present their geopolitical disputes as issues of historical and national identity and territorial integrity. In the case of Russia, the narratives regarding Ukraine underscore a shared history, the protection of ethnic Russians, while contesting Ukrainian sovereignty. Similarly, Serbia's narratives about Kosovo emphasize the cultural and historical significance of Kosovo, drawing its fake narrative for Kosovo as integral to Serbian identity and rejecting its independence as illegitimate and imposed by foreign powers. By delving into official discourse and media representations, this study aims to explore three core narratives used as expansionist platforms: historical and national identity narratives, the narrative of victimization and the narratives on the legitimacy of statehood and sovereignty and how these narratives are utilized within domestic and international spheres to gain internal and international support, legitimize policies, and perpetuate a sense of victimhood. The paper contends that although the contexts differ, the strategic deployment of historical grievances, ethnic unity, and anti-Western sentiment forms a common platform in the expansionist approaches of Russia and Serbia.