For several decades, international law has recognized certain norms such as the prohibitions against genocide, slavery, and military aggression as "jus cogens"- peremptory law which supersedes conflicting international treaties and customs. Despite widespread acceptance of the jus cogens concept, legal theorists continue to debate whether peremptory norms derive their legal authority from state consent, natural law, or the demands of international public order. Anxiety over peremptory norms' legal basis has frustrated efforts to clarify the scope and content of jus cogens, (...) as well as placing peremptory norms on a collision course with inherited notions of state sovereignty. Drawing on Immanuel Kant 's conception of fiduciary relations, this Article develops a new theory of jus cogens based on the idea that states are fiduciaries of their people. According to the fiduciary theory, peremptory norms do not stand in opposition to state sovereignty; rather, they are constitutive of state sovereign authority because all states owe their subjects a fiduciary obligation to comply with such norms. The fiduciary model of the state resolves the longstanding tension in international legal theory between peremptory norms and state sovereignty and points to discrete formal and substantive criteria for identifying peremptory norms. (shrink)

In international law, the term "jus cogens" refers to norms that are considered peremptory in the sense that they are mandatory and do not admit derogation. Although the jus cogens concept has achieved widespread acceptance, international legal theory has yet to furnish a satisfying account of jus cogens's legal basis. We argue that peremptory norms are inextricably linked to the sovereign powers assumed by all states. The key to understanding international jus cogens lies in Immanuel Kant 's discussion of the (...) innate right of children to their parents' care. Drawing on Kant 's account, our theory of jus cogens posits that states exercise sovereign authority as fiduciaries of the people subject to their power. An immanent feature of this state-subject fiduciary relationship is that the state must comply with jus cogens. The fiduciary theory clarifies jus cogens's content by generating discrete criteria for identifying peremptory norms. (shrink)

This Article explores three theories of humanitarian intervention that appear in, or are inspired by, the writings of Hugo Grotius. One theory asserts that natural law authorizes all states to punish violations of the law of nations, irrespective of where or against whom the violations occur, to preserve the integrity of international law. A second theory, which also appears in Grotius’s writings, proposes that states may intervene as temporary legal guardians for peoples who have suffered intolerable cruelties at the hands (...) of their own state. Each of these theories has fallen out of fashion today based on skepticism about their natural law underpinnings and concerns about how they have facilitated Western colonialism. As an alternative, this Article outlines a third theory that builds upon Grotius’s account of humanitarian intervention as a fiduciary relationship, while updating Grotius’s account for the twenty-first century. According to this new fiduciary theory, when states intervene to protect human rights abroad they exercise an oppressed people’s right of self-defense on their behalf and may use force solely for the people’s benefit. As fiduciaries, intervening states bear obligations to consult with and honor the preferences of the people they seek to protect, and they must respect international human rights governing the use of force within the affected state. By clarifying the respective responsibilities of the Security Council and individual states for humanitarian intervention, the fiduciary theory also lends greater coherency to the international community’s “responsibility to protect” human rights. (shrink)