Campbell, L. B. (2007). Just War, Legitimate Authority and Non-State Actors.
https://mospace.umsystem.edu/xmlui/bitstream/handle/10355/10897/CampbellJusWarLeg.pdf?sequence=1&isAllowed=y

has been cited by the following article:

• TITLE: Was Iraq War a “Just War” or Just a War? An Analysis from the Perspectives of Just War Theory

  AUTHORS: Ting Chun Ngai

  KEYWORDS: Just War Theory, War Politics, Iraq War

  JOURNAL NAME: Open Journal of Political Science, Vol.9 No.2, April 15, 2019

  ABSTRACT: Whether or not the Iraq war should be regarded as a “Just War” or just a war has been sparked a lot of academic and public debates since 2003. Within the academic world of war politics, there are heterogeneous perspectives, such as Pacifism and Realism etc. This paper chose to analyse the issue by the employment of the Just War Theory. It generated the various arguments of the thinkers from the school of Just War philosophy and adopted a case study methodology to examine the nature of Iraq war. After a comprehensive analysis, it can be concluded that the Iraq war is an unjust war from the perspective of just war theory.