What would political thought look like without the foundation of ethics? Drawing on the work of Emmanuel Levinas, Jacques Derrida and Jean-Luc Nancy, Madeleine Fagan puts forward a radical and far-reaching refusal of foundational ethics. She proposes that politics isn't built on ethics, where the two are separate things: politics and ethics are actually inseparable. The 'ethical' should not be understood as a label; it does not mean 'good' or it is not an evaluation or guide. Rather, both the ethical and the political are descriptions of the context in which we find ourselves. Fagan shows us how it has become necessary to rethink the relationship between ethics and politics, based on how we practice both. In doing so, she overturns a series of common assumptions about poststructuralist ethics. It brings together an exploration of the ethical and political thought of Emmanuel Levinas, Jacques Derrida and Jean-Luc Nancy for the first time. It provides an advanced introduction to poststructuralist ethical thought in politics and international relations. It focuses on the practical political implications of poststructuralist thought.