Environmental obligations of governments; Systematic or fragmented politics

International Law of water is a subcategory of International environment law which they overlap in terms of applicable laws. While the field of international law of water is a brand-new field and many of its aspects face research gap dealing with each aspect can be regarded untapped. States accept obligations through different treaties and conventions by which they are obliged to perform, the field of water which the most important parts are international watercourses and freshwater at the international arena are of high significance. Managing and protecting such waters brings up challenges from the perspective of international law for the watercourses states which it is due to fragmentation of international law. Some believe in coherence and systematic aspect of this field, but some others bearing in mind fragmentation of international law, believe that international law of water is also affected by fragmentation. In this article we attempt, regarding environmental obligations of states, to examine fragmentation and coherence aspects of the existing rules.