Inter-state disputes on human rights issues have been a far from exceptional phenomenon. During the Cold War the human rights question deeply divided the countries belonging to the Western and the communist blocs. Relations between developed and developing countries quite often have been heavily strained by controversies on human rights. But even within a group of countries belonging to an alliance or a homogeneous regional organization, human rights issues from time to time have been the cause of serious difficulties; e.g., the human rights record of Greece and Portugal within NATO and that of Greece and Turkey within the Council of Europe. Hardly ever have such disputes been subjected to third party dispute settlement machinery, even if such machinery was available. Most human rights treaties have a so-called procedure for state complaints, although in most cases acceptance of such a procedure is optional for the state parties. Only under two treaties, the European Convention on Human Rights and the UN Convention on the Elimination of All Forms of Racial Discrimination, it is mandatory for any state party against which a complaint by another state party is made, to submit itself to such a procedure. In most cases the procedures are of a fact-finding and mediatory character.Again, only under two (regional) treaties, the European and the American Convention on Human Rights, the initiating of such a procedure may lead to a binding decision.