International Environmental Agreement: A Dynamical Model of Emissions Reduction.

Overthelast two decades,theinterest ininternationalenvironmentalproblemssuch as climate change, ozone depletion, marine pollution has grown immensely and it has driven an increased sense of interdependencebetween countries. CooperationamongdifferentcountriesappearsnecessaryandthisresultsinInternational Environmental Agreements (IEA) such as Helsinky and Olso Protocol signed in 1985 and 1994; Montreal Protocol on the reduction of CFCs that deplete the ozone layer, signed in 1987; Kyoto Protocol, on the reduction of greenhouse gases causing global warming, signed in 1997. In these IEAs, the number of signatories varies considerably and this justifies the increasing interest of many authors to explain why IEAs are ratified only by a fraction of the potential signatories and to suggest strategies to increase their number.