This I have known in my gut.
A professor argues that in order to get sustainability, we will have to submit to a “new world order”. I agree that at the heart of sustainability is awareness for the health of the global ecosystem and everyone in it. That could be considered a “new world order”. However, the grandiose idea of one world government dictating the actions of everyone on the planet is a dream I call “green fascism”.
If we can live sustainably (and that’s a big “if”), local communities will trump global governments every day of the week. This is because unique local environments that have unique local challenges require unique local solutions that a world government can’t provide for.
Via: The Green Market
The current economic hardships serve as a catalyst for change. According to William E. Halal, professor emeritus of science, technology and innovation at George Washington University, “the normal level of social resistance and political stalemate is likely to oppose change. Thus, it may take an occasional environmental collapse, global wars and terrorism, or yet unknown calamities to force the move to global consciousness…Even with the turmoil that is sure to follow, this will mark the serious beginning of a unified global intelligence – a fine web of conscious thought directing life on the planet.” …
“We need a unified one world order to replace the collectivity of nation states at the international level. The Euro-American model which now dominates the world systematically disables people, destroys the earth and creates dependency on wage labour.” 
“In this model, politics loses its left-versus-right conflict and moves instead towards a fundamental concern for the health of the ecosystem…Democracy remains a need within this model, at both local and global levels, but as one part of the whole system. “Participation” becomes more than people’s physical presence and deepens to contain a cultural and spiritual dimension…To implement these concepts, we start with bringing the community together and look at the land resources available. We decide how we want the community to evolve and decide who has control of the resources.” 
Likewise, the following statement from the Canadian federal government to the United Nations contains a similar thread — a sustainable world order based on complete world management. “Canada believes the establishment of an international financial and economic system that is conducive to sustainable development must be a cornerstone of efforts to implement Agenda 21. Canada strongly supports efforts to reform international organizations to ensure effectiveness and efficiency in the promotion of global sustainable development.”