Well.......we have great debate and disscusions taking ENVIRONMENT as our topic.we daily hear about the precautions and result of harming the environments.And this is a global issue .There hasbeen a recent economic literature aruging that intetnational environment agreements can have no real effects on account of their voluntary and self enforcing nature.this literature concludes that the term of IEAs are the codification of the noncooperative equilibrium,and recent empirical work has supported this conclusion in the context of the Montreal Protocol.And developing countries bera the greatest cost in the implimatation of Montreal Protocol!!!!!!!!!