The principle of ambituity and the prohibition against excessive collateral damage to the environment during armed conflict
Erik V. Koppe
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Nordic journal of international law, Vol. 82, no. 1, 2013, p. 53-82
Publié également dans "War and the environment : new approaches to protecting the environment in relation to armed conflict / ed. by Rosemary Rayfuse"
This article aims to clarify the legal basis of the protection of the environment during armed conflict in general, and of the prohibition against excessive collateral damage to the environment in particular. It is submitted that the legal basis for the conventional and customary rules which protect the (intrinsic value of the) environment during armed conflict cannot be deduced from the four fundamental principles of the law of armed conflict: the principles of military necessity, distinction, proportionality and humanity. Rather, the specific obligations relating to environmental protection in times of armed conflict flow from the fundamental principle of ambituity. Similar to the principle of humanity, the principle of ambituity, which qualifies as a general principle of law in the sense of Article 38(1)(c) ICJ Statute, provides for an absolute limitation to the necessities of war. As such the principle of ambituity may be used to interpret existing conventional or customary rules of international law during armed conflict, to supplement, or under exceptional circumstances to modify or set aside these rules. With regard to the prohibition against excessive collateral damage to the environment during armed conflict, it is submitted that this prohibition flows from a customary rule which emerged in the 1990s, rather than from Articles 51 and 52 of Additional Protocol I, and which complements Articles 35 and 55 AP I (i.e. for States Parties to AP I). This article argues that any military action which causes collateral damage to the environment must first be assessed under this relatively new customary prohibition; and subsequently, if no breach can be established and if applicable, by reference to Articles 35(3) and 55 AP I. In order to enhance the scope of this prohibition and provide better protection for the environment against collateral damage it is suggested that further investigations should be conducted into the consequences of warfare on the environment.
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