Intermarium is one of the most important Polish geopolitical concepts. This article considers it within the category of militant democracy. It allows to explore the process of militant democracy, that is, introducing restrictions by legal means. Most restrictions have recently been introduced due to a coronavirus pandemic. Therefore, the article undertakes to examine the potential for implementation of the concept of the Intermarium during the pandemic and shortly after its end. The study uses a qualitative analysis of sources. Indicators relevant to the study of the process of militant democracy were distinguished based on the body of literature. Results: The traditional concept of the Intermarium erodes due to natural causes. Currently, Poland is more inclined to the concept of the Three Seas. In addition, in the face of the analysis that was carried out, it seems that in a pandemic situation we are observing the end of the paradigm of liberal democracy in this case.