Abstract :
Principal actors of the world politics are nation-states, but they are not the only actors.
The international system consists of nation-states, international organizations, and private actors.
Even though thousands of international organizations were established during the post-World War
II era, they were underestimated by students of international relations. The increasing number of
international organizations is parallel to the increasing levels of economic, political, social and
cultural transactions between individuals, societies and states. The growth of so many kinds of
non-state actors challenges and even weakens the “state-centric” concept of international politics
and replaces it with a “transnational” system in which relationships are more complex. These
organizations changed the international environment (Miller, 1994).
