Keywords:
World Order , Multilateralism , Interregionalism , Global Governance , Global DevelopmentCopyright (c) 2015 Björn HETTNE

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Abstract
After the 9/11 events, the World Order suffered an unexpected shock that deeply marked the flow of world events in the context of the millennium change. In this chapter, Björn Hettne deals with the main changes occurred in the frame of the first decade of the 21st century, as well as the numerous challenges and contradictions that the emerging post-Westphalian world order has to cope with. Through wide and complex issues such as environment, regionalism, the rise of new powers or the world economic crisis, the author tries to dig into some alternatives that could face these difficulties successfully. The alternatives drawn are global governance, interregionalism, multilateralism or the so-called “global development”, among many others.