In international law, there are two types of rules: ius cogens and ius dispositivum. Ius cogens refers to imperative norms that are accepted and adopted by the international community, while ius dispositivum refers to rules created, changed, or annulled by states. These rules can also be categorized as general principles or fundamental norms. The difference between ius cogens and ius dispositivum lies in their binding nature; ius cogens takes precedence over all other rules in international law. The author of a professional article discusses the mechanisms for distinguishing between these two types of rules in commercial law. Furthermore, in international law, states generally do not extradite their own citizens for crimes committed in a foreign country, highlighting the importance of ius cogens in protecting human rights.