In his final speech at the Helsinki Conference (CSCE) in 1975, Prime Minister Wilson called the Final Act of the Conference a “moral commitment”, not an international treaty. Thus, the Act is not binding as a matter of international law, though it is quite clear from the historical context, and from the wording of the Final Act itself, that the participating states have some sort of obligation (“commitment”) to base their future conduct on the provisions of the Final Act. The Act formulates norms, rules intended to determine state behaviour, but these rules are not of a legal character. This is, apparently, the assumption underlying the Wilson statement, to which many similar statements could be added. As will be shown, a considerable body of state practice based on the same concept has developed, and points to the existence of non-legal (pre-legal, para-legal, moral, political) obligations as distinguished from legal ones. Is it a valid distinction, can a distinction really be made between legal and non-legal norms? If so, what constitutes the difference? What is the basis of obligation in both cases?
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