This book was written as a dissertation for the Doctorate of Laws, University of Amsterdam. I am most grateful, first of all, to Professor A. J. P. Tammes, who acted as Promotor. Throughout my working at this study he managed to afford at the same time guidance, inspiration, and complete freedom. I have also benefited much from the suggestions and advice of Dr. Th. e. van Boven of the Dutch Ministry of Foreign Affairs, Member of the U.N. Commission on Human Rights, who was a very helpful Co­ referent. In earlier stages of the work, the critical remarks by Mr. S. A. Kuipers, Dr. H. Meijers and Miss J. M. van Wouw were of great im­ portance to me. So was the experience of participating in the program of graduate studies of the Columbia University School of Law, in I968- I969. lowe gratitude to the Amsterdam Law Faculty for having offered this opportunity to me. I am indebted to Miss Sinja Alma for her transforming a chaotic manuscript into a neat typescript in a most capable and patient manner; to Miss E. D. ]. ]ongens for her assistance in sorting out the United Nations documentation; and to Howard S. Gold (Gersono­ vitch), who was so kind as to correct the faults in my English. Since I went on tinkering with the text I am to blame for all linguistic errors in it. The research for this study was concluded in October, I972.