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The Distinction and Relationship Between Jus Ad Bellum and Jus in Bello, Hardback Book

The Distinction and Relationship Between Jus Ad Bellum and Jus in Bello Hardback

Part of the Studies in International Law series


This book explores the distinction and relationship between two principal branches of international law regulating the use of force: jus ad bellum (international law regulating the resort to force) and jus in bello (international humanitarian law).

Two principles traditionally govern the relationship between the two: 1) separation of jus ad bellum and jus in bello and 2) equal application of jus in bello to the conflicting parties.

These principles emerged in response to the claim that a conflicting party using force illegally under jus ad bellum should not benefit from the protection for victims of armed conflict under jus in bello, which would completely defeat the humanitarian purpose of jus in bello to protect all victims of armed conflict impartially.

There is, however, a third principle: concurrent application of jus ad bellum and jus in bello.

Unlike in the past, jus ad bellum now regulates the use of force during a conflict alongside jus in bello and hence, the two are now considered as one set of rules applying during a conflict.

The book explores in detail the interaction between jus ad bellum and jus in bello in the light of these three principles. The relationship between the two has been principally discussed in the context of the use of force in self-defence and international armed conflict.

However, this book examines the relationship in other contexts of a very different nature, namely the use of force under Chapter VII of the United Nations Charter, non-international armed conflict, and armed conflict of a mixed character.

The book concludes that the three principles governing the relationship are equally valid, with certain variations, in these different contexts.


  • Format: Hardback
  • Pages: 390 pages
  • Publisher: Bloomsbury Publishing PLC
  • Publication Date:
  • Category: Jurisprudence & philosophy of law
  • ISBN: 9781849460552



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