Explains that international law is not a monolith but can encompass on-going contestation, in which states set forth competing interpretations Maps and explains the cross-country differences in international legal norms in various fields of international law and their application and interpretation in different geographic regions Organized into three broad thematic sections of conceptual matters, domestic institutions and comparative international law, and comparing approaches across issue-areas Chapters authored by contributors who include top international law and comparative law scholars all from diverse backgrounds, experience, and perspectives.