相关规则
Iraq
Practice Relating to Rule 14. Proportionality in Attack
Iraq’s Law of the Supreme Iraqi Criminal Tribunal (2005) identifies the following as a serious violation of the laws and customs of war applicable in international armed conflicts:
Intentionally launching an attack in the knowledge that such attack will cause incidental loss of life or injury to civilians or civilian damage which would be clearly excessive in relation to the concrete and direct overall military advantages anticipated. 
Iraq, Law of the Supreme Iraqi Criminal Tribunal, 2005, Article 13(2)(D).
On the basis of a press conference and a statement by the President of Iraq, the Report on the Practice of Iraq considers that the armed forces must act with only the degree of force necessary to achieve the specific military objective. The aim is to give due regard to humanitarian requirements and to lessen civilian suffering. 
Report on the Practice of Iraq, 1998, Chapter 1.5, referring to Press Conference of the President, 10 November 1980, Encyclopedia of the Iraqi-Iranian War, Vol. I, p. 318 and Statement by the Iraqi President during preliminary discussions with the Committee of Good Offices, 2 March 1984, Encyclopedia of the Iraqi-Iranian War, Vol. III, p. 54.