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“Most Reasonable for Humanity”: Legitimation Beyond the State

Jus Cogens

Abstract

Legal and political philosophers of a normative bent face an uphill struggle in keeping themes of global justice and cosmopolitan governance, at the forefront of their disciplinary debate, given the perceived urgency of confronting, at the domestic level, the populist upsurge in mature democracies and Bdemocratizing societies^alike. In this paper, these two levels of analysisnational and transnational-mutually enrich one another through a reflection on the ground of legitimacy. In the first section (BPerfectionism Redux^), (a) neo-perfectionist approaches to the legitimation of transnational authority (rooted in Kantian or Hegelian notions, or in some natural law conception of human rights) and (b) public reason approaches rooted in the paradigm of Bpolitical liberalism^will be contrasted. In the second section (BFrom Balance to Separation of Powers^), a non-perfectionist and normative conception of the legitimacy of transnational authorities will be derived from Rawls's Bliberal principle of legitimacy^(renamed Blegitimation by constitution by F. Michelman) and the difference with the application of the same principle at the domestic level will be elucidated. In the third section (BLegitimacy and the Flourishing of Humanity: Buchanan and Keohane on Global Institutions^), on the basis of such conception, one of the most complete and influential approaches to the legitimacy of transnational authoritiesi.e., the BComplex Standard of Legitimacy^expounded by A. Buchanan and R. Keohane in BThe Legitimacy of Global Governance Institutions^-will be critically assessed.