Customary International Law

A State Preferences Account of Customary International Law Adjudication

The standard account today of customary international law (CIL) is that it arises from the widespread and consistent practice of states followed out of a sense of legal obligation. Although commonly recited, this account is plagued by evidentiary, normative, and conceptual difficulties, and it has been subjected to increasing criticism in recent years. This paper posits a different account of C...

The Formation of Customary Law

Islamic Law , Customary Law , and Afghan Informal Justice

This report is part of the United States Institute of Peace’s (USIP) ongoing effort to understand the pluralist legal system of Afghanistan. It examines, compares, and contrasts Islamic law with traditional forms of justice in an attempt to elucidate how such rule of law approaches interact as well as provide a fuller understanding of each system to better guide rule of law practice, policy, an...

The Emerging Customary Law of Space

The Political Economy of “Aboriginal Customary Law”

Discussions about aboriginal-non-aboriginal relations in Canada have stressed the need to recognize “aboriginal customary law” in self-government arrangements. It is maintained that many aspects of “native law” differ radically from the legal systems that emerged in European countries, and so imposing Canadian conceptions of law on aboriginal communities is an obstacle to native self-determinat...