The three contending theories in international relations are: Realism, Liberalism, and Constructivism
Realism posits that: states exist in an anarchic international system and that there is no overarching hierarchical authority. Each state bases its policies on an interpretation of its national interest defined in terms of power. The structure of the international system is determined by the distribution of power among states.
Liberalism/Neoliberal Institutionalism posits that: human nature is basically good and states generally cooperate and follow international norms and procedures that they have agreed to support
Constructivists posit that: the key structures in the state system are not material but rather malleable and ever-changing
Radical Theory: State is agent of international capitalism. International system is stratified between haves and have-nots. Haves dominate international relations
Constructivists: explore how ideas shape identities and analyze the impacts of culture, norms, procedures, and social practices.
The Tools and Methods used to Study International Relations include: History, Philosophy, and the Scientific Method
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