This book considers gender as a convenient tool for making new boundaries within the European Union. It offers a political analysis based on sociological surveys conveyed by the author in 2008–2021. It emphasises the utmost necessity of a proper understanding of specific gender political technologies applied in ethnic and religious diasporas within the EU borders, by EU ruling elites, to avoid ideological collapse in relations with diaspora political groups and general members. The book demonstrates that uncritical application of EU gender equality programs within diasporas may transform gender to a dangerous political force destabilising the European Union. The monograph will be of interest for political science researchers, legislators, and administrators that work with political dimension of gender.