القاعدة ذات الصلة
Benin
Practice Relating to Rule 145. Reprisals
Section B. Reasonable notice and measure of last resort
Benin’s Military Manual (1995) states that reprisals “may only be used if: … a prior warning is given”. 
Benin, Le Droit de la Guerre, III fascicules, Forces Armées du Bénin, Ministère de la Défense nationale, 1995, Fascicule III, p. 13.