International law is the law generated by more than one state to regulate the international transactions of both states and private parties. It includes rules drawn from treaties, customary international law, general principles of law, natural law, and equity. It is applied in international diplomacy, international courts and arbitrations, and domestic courts and arbitral tribunals. Its fields include the laws of war and peace, the law of the sea, the laws of diplomatic practice, the law of treaties, the law of recognition and succession of states and governments, international trade and commerce, international human rights law, the law of international organizations, international environmental law, international business law, and international criminal law.