International Court of Justice(Judicial arm of the United Nations. It has jurisdiction to give advisory opinions on matters of law and treaty construction when requested by the General Assembly, Security Council or any other international agency authorised by the General Assembly to petition for such opinion. It has jurisdiction, also, to settle legal disputes between nations when voluntarily submitted to it)
international economic law(The recognized rules guiding the commercial relations of at least two sovereign states or private parties involved in cross-border transactions, including regulations for trade, finance and intellectual property)
international environmental relations(The political or diplomatic interaction or dealings between independent nations that pertain to ecological concerns)