Richard Falk & Mark Juergensmeyer 
Legality and Legitimacy in Global Affairs [PDF ebook] 

This book focuses on the problematic relationship between legality and legitimacy when a nation (or nations) intervene in the work of other nations. Bringing together a wide range of contributors with a broad set of cases that consider when such intervention is legitimate even if it isn’t legal–and vice versa–the chapters cover humanitarian intervention, nuclear nonproliferation, military intervention, international criminal tribunals, interventions driven by environmental concerns, and the export of democracy. By focusing on a diverse array of cases, this volume establishes a clear framework for judging the legitimacy of such actions.