Part I. Introduction: 1. Introduction Simon Lester, Bryan Mercurio and Lorand Bartels; Part II. Economics and Politics of PTAs: 2. The economics of PTAs Pravin Krishna; 3. The political economy of PTAs Olivier Cattaneo; 4. Bilateral and plurilateral PTAs David Evans; Part III. Relationship with WTO and International Law: 5. Legal requirements for PTAs under the WTO Andrew D. Mitchell and Nicolas J. S. Lockhart; 6. PTAs and public international law Andrew D. Mitchell, Tania Voon and Elizabeth Sheargold; Part IV. Legal Aspects of PTAs: A Comparative Analysis: 7. Regulatory regionalism in the WTO – are 'deep integration' processes compatible with the multilateral trading system? James H. Mathis; 8. Agriculture Timothy E. Josling; 9. Services Federico Ortino; 10. Investment Joshua P. Meltzer; 11. Government procurement Arwel Davies; 12. Intellectual property Michael Handler and Bryan Mercurio; 13. Social issues: labour, environment and human rights Lorand Bartels; 14. Dispute settlement Victoria Donaldson and Simon Lester.