CEVAP:

A necessary cause is a condition that must exist if war is to occur, without that condition war cannot breakout. The existence of armed forces is a necessary condition because without weapons wars cannot be declared. However on the other hand the existence of armed
forces, while a necessary cause is not a sufficient cause for the outbreak of war. Finally, in the words of Garnett “a cause of war can be necessary without being sufficient while a sufficient cause can instigate war without being necessary”.