War is the most obvious instances of the use of force. Armed hostilities in any kind are called conflict that may happen between two or more states which are in complete contrast. As was stated about Yougoslavia in International Court of Justice, an international armed conflict will be existed when the countries have been brought on the force lever. Then, the fire of war will involve the whole land, naval and air domain of those countries and this is known as land battles, naval wars and air wars. In the present paper we will analyze and investigate the air wars. Air war is the series of operations that are guided and steering with different kinds of military tools in air force (such as aircraft, helicopters and today unmanned aircrafts) by a state against the hostile country. This kind of war that is less dealt with requires its own special rules because of the special implemented tools which can make much destruction in a few seconds. Here, we will study those rules and express the efforts that are made to rule the use of these war tools and analyze their principles along with the Hauge conventions as 1923 convention and also Geneva Convention and the first joining protocol after that. In view of the fact that today the aggressive powers are the beginners of war directly or indirectly these war tools are mainly used because of their speed and sudden nature of war. In this regard, the speed of tools in one hand and the distance between the invading and the invasion on the other hand cause the third parties exit from neutrality (by giving military base or landing let) or third parties rape of privacies so these issues justifies the necessity of reference to the governing rules of this kind of armed international hostilities, then we study these rules here.