This paper sets out the reasons why the role of international law is important in different aspects, and goes on to explain certain elements regarding chaos in international law, conflicts, human rights, terrorism and global environment. It will also introduce the United Nations system with a focus on the opinion of the most highly publicists in international law. As international law seeks to displace chaos, its objective nature and binding force imposes by a higher authority, create stability and certainty in social relations and impose order where such relations are in danger of breaking down. The implication is that many of the topics that receive the most attention in international law – the laws of war, territorial limits, arms agreements, and so on – are unlikely to be affected by international law. On the other hand, issues such as international economic matters, environmental issues, and so on, can more easily be affected by international law. This suggests that the international law should focus greater attention on the latter subjects and less on the former.