the court limited the scope of its judgment to the immunity from criminal jurisdiction and the inviolability of an incumbent minister for foreign affairs and that as none of the treaties brought to the attention of the court covered this issue that the court must decide the issue based on customary international law. but it rejected belgium's argument that because the parties had not raised the issue of "the disputed arrest warrant, issued by the belgian investigating judge in exercise of his purported universal jurisdiction, complied in that regard with the rules and principles of international law governing the jurisdiction of national courts, because that question was not contained in the final submissions of the parties." and concluded that this did not stop the court dealing with certain aspects of that question in the reasoning of its judgment.