Why does Immanuel Kant (1724–1804) consistently invoke God and Providence in his most prominent texts relating to international politics? In this wide-ranging study, Seán Molloy proposes that texts such as Idea for a Universal History with Cosmopolitan Intent and Toward Perpetual Peace cannot be fully understood without reference to Kant’s wider philosophical projects, and in particular the role that belief in God plays within critical philosophy and Kant’s inquiries into anthropology, politics, and theology. Molloy’s broader view reveals the political-theological dimensions of Kant’s thought as directly related to his attempts to find a new basis for metaphysics in the sacrifice of knowledge to make room for faith.This book is certain to generate controversy. Kant is hailed as “the greatest of all theorists” in the field of International Relations (IR); in particular, he has been acknowledged as the forefather of Cosmopolitanism and Democratic Peace Theory. Yet, Molloy charges that this understanding of Kant is based on misinterpretation, neglect of particular texts, and failure to recognize Kant’s ambivalences and ambiguities. Molloy’s return to Kant’s texts forces devotees of Cosmopolitanism and other ‘Kantian’ schools of thought in IR to critically assess their relationship with their supposed forebear: ultimately, they will be compelled to seek different philosophical origins or to find some way to accommodate the complexity and the decisively nonsecular aspects of Kant’s ideas.

A similar book is Reidar Maliks, Kant’s Politics in Context. Oxford: Oxford University Press 2014, but it does not focus on international law. Pauline Kleingeld’s Kant and Cosmopolitanism: The Philosophical Ideal of World Citizenship, Cambridge: Cambridge University Press 2012 touches upon international relations, but is mainly a book on Kant’s cosmopolitanism, and a comparison with other 18c thinkers.

Classical political theorists such as Thucydides, Kant, Rousseau, Smith, Hegel, Grotius, Mill, Locke and Clausewitz are often employed to explain and justify contemporary international politics and are seen to constitute the different schools of thought in the discipline. However, traditional interpretations frequently ignore the intellectual and historical context in which these thinkers were writing as well as the lineages through which they came to be appropriated in International Relations. This collection of essays provides alternative interpretations sensitive to these political and intellectual contexts and to the trajectory of their appropriation. The political, sociological, anthropological, legal, economic, philosophical and normative dimensions are shown to be constitutive, not just of classical theories, but of international thought and practice in the contemporary world. Moreover, they challenge traditional accounts of timeless debates and schools of thought and provide new conceptions of core issues such as sovereignty, morality, law, property, imperialism and agency.

Kant’s moral and political philosophy has been important in developing ethical thinking in international relations. This study argues that his theory of the state is crucially important for understanding the moral agency of the state as it is discussed in contemporary debates. For Kant, it is argued that the state has not only duties but also, controversially, inalienable rights that ground its relationship to its citizens and to other states. Most importantly, the state – regardless of its governmental form or factual behaviour – has a right to exist as a state. The Kantian account provided, therefore, explores not only the moral agency but also the moral standing of the state, examining the status of different kinds of states in world politics and expectations towards their ethical behaviour. Every state has a moral standing that must be respected in a morally imperfect world gradually transforming towards the ideal condition of perpetual peace.

Kant and the Law of Peace is a critical examination of the jurisprudential aspects of Kant's international thought, with reference to the argument of his treatise Perpetual Peace (1795). Kant's international thought is situated in the wider context of his moral and political philosophy. Particular attention is given to explaining how Kant saw law as providing the basis for peace among men and states in the international sphere, and how, in his exposition of the elements of the law of peace, he broke with the secular natural law tradition of Grotius, Hobbes, Wolff and Vattel.

This close examination of Kant's writings shows him to be both a conservative partisan of the international status quo of sovereign states and yet also the inspiration for radical, global reform for democracy and universal rights. The focus on Kant's concept of justice provides insight into the contemporary evolution of liberal internationalism, connecting Kant's legacy to the post-Cold War policy agenda and the moral dilemmas that currently confront political leaders and the societies they represent. Franceschet forces a reconsideration of Kant and a broadening of concern from democratic peace to cosmopolitan justice.