This volume attempts contribute to the discussion about the nation, nationalism and its inevitable attendant, enmity. In what sense have friendship and hostility (Schmitt 1996, Derrida 1994, Bojanić 1995; 2015) gained new meanings, and what would those meanings be? Does nation-building always involve a common enemy one has to fight? Or does it meet its limits with being a mere remedy for contemporary forms of inequality, or a tranquilizer for those unsettled by the complexity and insecurity brought up by globalized capitalism? These questions become increasingly important as we witness the crisis of the collectivity-building process of the European Union. Do the contemporary politics of difference contest the notion of enmity or, quite to the contrary, reaffirm it?