Analyses the viability of controlling climate change through a set of regional or sub-global climate agreements rather than via a global treaty. The main purpose is not to trace in detail the process of negotiation and implementation of international regimes, but rather to evaluate whether a series of regional or sub-global agreements are more likely to achieve climate change control than a global agreement. The volume goes on to discuss how these agreements might be achieved. As a political science analysis, the focus will be on institution building and governance. As an economic analysis, it will concentrate on incentives used to encourage participation in a global as opposed to a fragmented agreement. Lessons from EU integration as well as from global and regional trade agreements are employed in order to analyze the future prospects of negotiations to control climate change.