In February 2022, Russia began a full-scale invasion of Ukraine. The relevant narrative articulated by Vladimir Putin presented it as a short-term mission of military professionals. However, as the war continued, the situation at the front required complicated decisions that the initial narrative was not able to cover. This article analyses the core transformations of the Russian narrative on the war in Ukraine. Appealing to the strategic narrative concept, this article suggests a framework for assessing the narrative’s viability. The author reveals that, although the current modified narrative is not able to provide a clear and coherent explanation corresponding to people’s lived experiences, it is still effective due to the following reasons. First, it is built on and perceived within an intuitively familiar discursive landscape that has been promoted for decades. Second, the external prerequisites of the viability, such as the scale of its articulation through propaganda or existing opportunities to perceive alternative narratives, remain strong. Thus, it is likely that most of the rational argumentation in the narrative will be further replaced by its sacralization, and the information isolation will be continuously reinforced.