global economics and global politics are inter linked. actually all politics are run under the umberella of global economics.thus all the politics are run to fulfill the economic ends. i personally feel the biggest obstacle to global economics is perhaps over rellience on the dollars. the world economies are dollar centric. There should be different currencies introduced and must saturate the world markets to avoid the crisis in world economics.But this is not possible as the super power America has stakes in it, and the hidden interests are to be secured, to be the affective player in the world politics.