Règle correspondante
Practice Relating to Rule 43. Application of General Principles on the Conduct of Hostilities to the Natural Environment
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 widespread, long-term and severe damage to the natural environment, which would be clearly excessive in relation to the concrete and direct overall military advantage anticipated. 
Iraq, Law of the Supreme Iraqi Criminal Tribunal, 2005, Article 13(2)(E).