In the face of geopolitical, socio-economic challenges of the XXI century the peculiarities of the activities of national minorities of Ukraine during the undeclared Russian-Ukrainian war are revealed. A comprehensive analysis of the ethnopolitical situation in the territory of Ukraine 2014-2018’s was conducted. It was determined that one of the areas of Hungary’s destructive activity in the Transcarpathian region remains the support of educational projects. It is proved that exacerbation of conflict situations with the participation of national minorities of Ukraine is not possible without the foreign policy influence of the Russian Federation on the EU member states. The focus is on Ukrainian-Polish interstate relations in the ethno-national sphere. The Poles in Ukraine and the Ukrainians in Poland acted as a reliable bridge to the Ukrainian-Polish understanding. The Polish national minority in Ukraine is tolerant of socio-political transformations in Ukraine and is not conflicted in view of the foreign policy influences of the Russian Federation. At the same time, the situation with human rights of national minorities in the annexed by Russia Crimea was bad during the period under review. It was noted that the consolidation of European values іn Ukraine in the socio-political, economic, and ideological dimensions in the face of external challenges consolidated the Ukrainian people. However, it did not remove the contradictions in the political superstructure of the state, which in the background of the «hybrid war» is fueled by military curators, hidden sympathizers of the «Russian world», outspoken adherents of the Russian Federation

national minorities; Ukraine; the Russian Federation; interstate relations; «hybrid war»; «Russian world»