Соответствующая норма
Benin
Practice Relating to Rule 45. Causing Serious Damage to the Natural Environment
Section A. Widespread, long-term and severe damage
Benin’s Military Manual (1995) states that it is prohibited “to use means and methods of warfare which are likely to cause widespread, long-term and severe damage to the natural environment”. 
Benin, Le Droit de la Guerre, III fascicules, Forces Armées du Bénin, Ministère de la Défense nationale, 1995, Fascicule III, p. 12.