The main theme of this volume of theYearbook of International Humanitarian Law is the 70th anniversary of the Geneva Conventions. The evolution of these crucial treaties and international humanitarian law more generally comes back in six chapters addressing topics such as sieges, compliance, indiscriminate attacks and non-state armed groups.

The second part of the book contains a chapter on the acquittal on appeal of Jean-Pierre Bemba Gombo by the International Criminal Court on the basis of command responsibility for war crimes, as well as an extensiveYear in Review describing the most important events and legal developments in the area of international humanitarian law that took place in 2019.

TheYearbook of International Humanitarian Law is the worlds only annual publication devoted to the study of the laws governing armed conflict. It provides a truly international forum for high-quality, peer-reviewed academic articles focusing on this crucial branch of international law. Distinguished by contemporary relevance, theYearbook of International Humanitarian Law bridges the gap between theory and practice and serves as a useful reference tool for scholars, practitioners, military personnel, civil servants, diplomats, human rights workers and students.

Part I. 70th Anniversary of the Geneva Conventions.-.Chapter 1. Evolution of the International Humanitarian Law Provisions on Sieges.- Chapter 2. Towards a Better Understanding of the Concept of Indiscriminate Attack; How International Criminal Law Can Be of Assistance. Chapter 3. Double Trouble: The Cumulative Approach and the Support-Based Approach in the Relationship between Non-State Armed Groups.- Chapter 4. The Rebel with the Magnifying Glass: Armed Non-State Actors, the Right to Life and the Requirement to Investigate in Armed Conflict.- Chapter 5. A Birds-Eye View on Compliance with the Law of Armed Conflict 70 Years after the Adoption of the Geneva Conventions.- Chapter 6. Not the Usual Suspects: Religious Leaders as Influencers of International Humanitarian Law Compliance.- Part II. Other Articles.-  Chapter 7. Appellate Deference Versus the De Novo Analysis of Evidence: The Decision of the Appeals Chamber in Prosecutor v Jean-Pierre Bemba Gombo.- Chapter 8. Year in Review 2019.- Table of Cases.- Index.