The conceptions of the international system, have been variously described in many terms from two identical theorists, who are realists and liberalists. Realist’s conceptions on the international system viewed the states as a changing structure which are all sovereign. For instance, no other state could illegitimately intervene other states’ internal affairs. State should seek power because the only true guarantee power in the changeable international system is their own power, their own preservation. In addition to this, states are easily getting involved in the conflict whether their aims are simple self-preservation or to conquer others because the states have increased its power and as its ambition, it would try to expand and implement their power across the region. Furthermore, realists rely on the polarity, which means the distribution of power to conquer others by counting the number of pole and the material power is concentrated. As the realists, they believe that multi – polar system is the system that would bring stability in the international system as in the 19th century context where Britain, France, Russia, Austria-Hungary and Germany were the great powers. While realists basically viewed the international systems as anarchic or states only seek for power, liberalist views emphasized on the unchanging structure of the international system. Liberalist views on the international system as the interdependent system where multiple and fluid interactions occur among states; for example, Robert Keohane and Joseph Nye described international system as interdependent system. Negotiating and coordinating occur in the system through multilateralism and one of which is the collective security system. Additionally, liberalists view the international system as international order, which is the distribution of power and authority among political actors on the global stage. Another liberal conception is that liberalists had the similar view on the international system in the way of neo-liberal institutionalists describe. Neo-liberal institutionalists also defined international system as an anarchic same as the realists; however, neo-liberal institutionalists drew out different conclusion. It may be cooperative system, wherein states choose to cooperate when they realist that they will have future interactions with other states.