Abstract
It is argued that although there may be some case, on economic grounds, for international cooperative action to deal with the threat of climate change or an excessive depletion of biodiversity, the advantages of participation in such action are probably not very great for most rich countries. Furthermore, some of the ‘ethical’ arguments advanced in support of the view that the rich countries should shoulder most of the burden of international action are weak. Nevertheless, there is a case for the richer countries to do so both on grounds of a moral responsibility to assist very poor people and on grounds of the need to look at international cooperation in a wider framework that takes account of the dependence of cooperation from different groups of countries in dealing with a host of other international problems.