Introduction

Regional trade agreements (RTAs) have proliferated around the world in the past decade. Some 200 RTAs currently in force have been notified to the World Trade Organization (WTO) and the number will continue to rise given the many RTAs being proposed and negotiated. It is estimated that, if one takes into account RTAs which are in force but have not been notified, signed but not yet in force, currently being negotiated, and in the proposal stage, close to 400 RTAs are scheduled to be implemented by 2010 (Fiorentino, Verdeja and Toqueboeuf, 2006).