In “Waning Sovereignty, Walled Democracy”, Wendy Brown argues that the “frenzy” of wall-building between nation-states in the twenty-first century is an expression of their weakness, rather than their strength. According to Brown’s analysis, (1) what are the contemporary realities( current age) against which border walls are reacting and (2) why, nevertheless, does she think they are ineffective? Bonus point: Since Brown argues that border walls are ineffective, what is the main function they play? I.e., why do nation-states continue to construct such walls, despite their ineffectiveness?