Ralph Janik 
International Law and the Use of Force [PDF ebook] 
Cases and Materials

This book introduces key issues on the use of force while also providing a detailed analysis of technological developments and recent legal discussions in the field. The author examines areas such as support for rebel groups, the concept of humanitarian intervention, the Responsibility to Protect and recent conversations around the fight against the "Islamic State" in a clear and accessible manner, through a thorough presentation of relevant cases and materials. This book is essential reading for students studying force and its intersection with international law.