The turn of the 2010-2020s is characterized by crisis at several levels - global, international (interstate), regional and national. The ethnic factor is once again taking on a special significance in the analysis of political processes, including those in the Euro-Atlantic area. The paper analyzes European Identitarianism as a form of pan-nationalism, akin to such pan-nationalist movements of public thought as Pan-Germanism, Pan-Slavism, and Pan-Europeanism. The aim of the article is to identify the peculiarities of the current stage in the evolution of the right-wing party-political sector in Europe. The theoretical and methodological bases are the concept of divided societies, identitarian approach, the case-study method and the comparative method. The identitarian worldview is considered as an attempt to adapt right-wing discourse to the new realities of the post-Westphalian world order, in which the national-territorial state undergoing crisis is gradually losing its role as the monopoly subject of the system of international relations. European identitarians' appeals to pan-ethnic and cultural pan-national identities reflect the objective fact that alternative political spaces (transnational, sub-national, supranational, pan-national) are taking an increasingly important place in world politics. At the same time, the question remains open as to whether the identitarianists are able to overcome their marginal status and enter the mainstream political field.