International Organizations as Subjects of International Law

The emergence of international organizations, operating at both universal and regional levels, and in the most diverse domains of human activity (political, economic, social, cultural, and of human security), brought about an expansion of the corpus juris of International Law, starting with the international legal personality and capacity themselves. With the reassuring growth of multilateralism, international organizations fostered international cooperation. General debates preceding the adoption of resolutions in international organizations have afforded an opportunity for the ascertainment and assessment of the formation and evolving of the opinio juris. The assertion and recognition of the international legal personality of international organizations was accompanied pari passu by the acknowledgement of their treaty-making capacity. The work and dynamism of the international organizations have contributed decisively to modify the structure itself of the international legal order.Keywords:corpus juris; International Cooperation; international law; international organizations; multilateralism; opinio juris; treaty-making capacity