International Committee of the Red Cross (ICRC) Opinion Paper, March 2008
The States parties to the 1949 Geneva Conventions have entrusted the ICRC, through the Statutes of the International Red Cross and Red Crescent Movement, "to work for the understanding and dissemination of knowledge of international humanitarian law applicable in armed conflicts and to prepare any development thereof"1. It is on this basis that the ICRC takes this opportunity to present the prevailing legal opinion on the definition of "international armed conflict" and "non-international armed conflict" under International Humanitarian Law, the branch of international law which governs armed conflict. International humanitarian law distinguishes two types of armed conflicts, namely: • international armed conflicts, opposing two or more States, and • non-international armed conflicts, between governmental forces and nongovernmental armed groups, or between such groups only. IHL treaty law also establishes a distinction between non-international armed conflicts in the meaning of common Article 3 of the Geneva Conventions of 1949 and non-international armed conflicts falling within the definition provided in Art. 1 of Additional Protocol II. Legally speaking, no other type of armed conflict exists. It is nevertheless important to underline that a situation can evolve from one type of armed conflict to another, depending on the facts prevailing at a certain moment. I. International Armed Conflict (IAC) 1) IHL Treaties Common Article 2 to the Geneva Conventions of 1949 states that: "In addition to the provisions which shall be implemented in peacetime, the present Convention shall apply to all cases of declared war or of any other armed conflict which may arise between two or more of the High Contracting Parties, even if the state of war is not recognized by one of them. The Convention shall also apply to all cases of