if u r askin from exam point of view there wont b a questn as such on this..asking u to describe "pressure in world politics"
i thnk this is the gist of IR..meaning the economic, political, cultural, social pressures..these may b in the form of multilateral associations or in bilateral relations(for instance pressure n couter pressures in US- China relations)..personally i thnk we can drag any topic of IR in this context...

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