international institutions 1295
Rights Body was proposed under conditions to be determined.
53
Decision-
making is in principle to be by consultation and consensus.
54
Some legal aspects of international organisations
55
There is no doubt that the contribution to international law generally
made by the increasing number and variety of international organisations
is marked. In many fields, the practice of international organisations has
had an important effect and one that is often not sufficiently appreciated.
In addition, state practice within such organisations is an increasingly
significant element within the general process of customary law forma-
tion. This is particularly true with regard to the United Nations, with its
universality of membership and extensive field of activity and interest,
although not all such practice will be capable of transmission into cus-
tomary law, and particular care will have to be exercised with regard to
the opinio juris, or binding criterion.
56
As well as the impact of the practice of international organisations upon
international law, it is worth noting the importance of international legal
norms within the operations of such organisations. The norms in question
guide the work and development of international institutions and may act
to correct illegal acts.
57
International organisations have in the past been
defined in international treaties simply as ‘inter-governmental organisa-
tions’ in order to demonstrate that the key characteristic of such groupings
53
Article 14.
54
Article 20. Where there is no consensus, it will be for the ASEAN Summit to decide how to
proceed in a particular matter. Article 22 calls for the establishment of dispute settlement
mechanisms.
55
See e.g. Amerasinghe, Principles; Schermers and Blokker, International Institutional Law;
Bowett’s International Institutions, part 3; Klabbers, Introduction; A. Reinisch, International
Organizations Before National Courts, Cambridge, 2000; I. Brownlie, Principles of Public
International Law, 6th edn, Oxford, 2003, chapter 31, and Reuter, International Institutions,
pp. 227–64. See also E. Lauterpacht, ‘Development’ and ‘The Legal Effects of Illegal Acts
of International Organizations’ in Cambridge Essays in International Law, Cambridge,
1965, p. 98; K. Skubiszewski, ‘Enactment of Law by International Organizations’, 4 BYIL,
1965–6, p. 198; Whiteman, Digest, vol. XIII; R. Higgins, The Development of International
Law Through the Political Organs of the United Nations, Oxford, 1963, and generally other
sources cited in footnote 2 above.
56
See above, chapter 3, p. 84.
57
See e.g. the IMCO case, ICJ Reports, 1960, p.150; 30 ILR, p.426; the Conditions of Admission
of a State to the United Nations case, ICJ Reports, 1948, p. 57; 15 AD, p. 333; and the Certain
Expenses of the United Nations case, ICJ Reports, 1962, p. 151; 34 ILR, p. 281. See also
E. Lauterpacht, ‘Development’, pp. 388–95.