Islamic law has given great attention to the international relations since the emergence of Islam. This paper sheds light on the Islamic law ordinances with regard to international relations at the time of war. The basis of international relations in Islam is peace and not resorting to war just in case of necessity, self – defense, and protecting the state. If war is a necessity the latter has legal restrictions such as the following: the Muslim warrior shall not kill but for necessity and shall not damage property without excuse. It is strictly forbidden to burn the enemies, make them drown, or mutilate the dead bodies. It is also forbidden to kill ones parents if they are non – Muslim enemy fighters.
Faqihs have agreed that it is forbidden to kill or harm, in any way, civilians who do not take part in fighting, such as women, children, monks, aged sheikhs, and those who are crazy or blind.