Explain Law making treaties

Law making treaties are those treaties which come into existence because of lack of customary laws related to a particular issue and in order to make people aware of certain provisions treaties are formulated. Law making treaties create general norms for the future conduct of the parties. For example, there were no customary laws on nuclear tests; therefore, a Comprehensive Test Ban Treaty (CTBT) was formulated, which prohibits nuclear testing. Similarly, World Trade Organization (WTO) can be classified as an example of a law making treaty.