The continuous growth of natural disasters together with climate change are phenomena that require our legal attention. The continuous disasters caused by natural events, as well as the products of human activities of industrial and technological accidents, pollution and continuous environmental degradation are situations where states and international institutions show increasing attention and through regulatory instruments and international environmental standards try to manage the different phases of the cycle of a disaster. The sources of international environmental law that are the cornerstone of the disaster prevention obligation together with the minimum measures that states take to fulfill this obligation are analyzed in various treaties and are part of our investigation together with the interpretation of the jurisprudence which comes from international tribunals, conferences of the parties and treaty bodies. Within this complex framework and with a lot of data we are here to analyze and give some answers, even of a theoretical nature, of the international protection of natural disasters at a global level.