CEVAP:

Efficient causes are related to particular circumstances, for example if state A claims something from state B the efficient cause is the claim of state A. However, a claim needs the permissive cause to lead to war. Permissive causes do not promote war actively, but they allow it to occur (Garnett, 2007: 24-25). At this point the anarchical structure of the international system is one of most argued permissive causes of war. As Kenneth Waltz has suggested in his Man, The State and War (Waltz, 1959) the structure of the international system, its lack of a superior authority creates the condition that permits and facilitates the occurrence of war.