Armed non-state actors (ANSAs) often have economic aims that international law needs to respond to. This book looks at the aim of Islamic State to create an effective government, with an economically independent regime, which focused on key oilfields in Syria and Iraq. Having addressed Islamic State's quest for energy resources in Iraq and Syria, the book explores the lawfulness of the war with Islamic State from a variety of legal aspects. It has been attempted to make inroads into the most controversial aspects of contradictions in the application of jus ad bellum and jus in bello,...