International law can refer to three distinct legal disciplines.
Public international law, which involves for instance the United Nations, maritime law, international criminal law and the Geneva conventions.
Private international law or conflict of laws, which addresses the question of which legal jurisdiction cases may be heard in supranational law or the law of supranational organizations, which concerns at present regional agreements where the special distinguishing quality is that laws of nation states are held inapplicable when conflicting with a supranational legal system. Source: Wikipedia
