The Tragedy of the Commons and Overfishing

According to a recent article in the Huffington post the World Trade Organization or WTO is currently working on fishing subsidies that would attempt to eliminate unfair and destructive fishing policies while allowing for fishers to have continued access to abundant resources. The WTO says that if the negations fail to make headway in the international arena it would not only affect global health and economic policies but would also undermine the policies that the WTO is working on in other areas. The WTO hopes to pass the regulations in 2011 as part of the Doha trade round, while the United States already supports some measures of reducing overfishing the WTO calls for more cooperation from U.S. ambassadors and political figureheads. The article sums up noting that the 153 countries that are part of the WTO need to be held responsible for their fishing policies and that the implications in such countries as China and Brazil could effectively help mitigate the environmental problems currently associated with overfishing. Feel free to discuss the implications of international cooperation in overfishing, is it possible? Also does the Tragedy of the Commons prevent any real change from occurring? Finally how do countries make decisions on a macroeconomic level with regards to international agreements?
Blake Andrews