Norma relacionada
Practice Relating to Rule 145. Reprisals
Section B. Reasonable notice and measure of last resort
Indonesia’s Air Force Manual (1990) provides:
In principle, reprisals in warfare are prohibited, i.e. an act which categorize[s] against the laws of war and aim[s] to [answer to] the breach of the laws of war treaties committed by the adverse party. The reprisal could be allowed if, although it has been warned, the adverse party still continue[s] to violate the laws of war. 
Indonesia, The Basics of International Humanitarian Law in Air Warfare, Indonesian Air Force, 1990, § 15(c).