1. IntroductionGlobal trade governance has evolved substantially in the last 25 years. With the establishment of the World Trade Organisation (WTO) in the mid-1990s, a comprehensive set of binding and enforceable agreements came into force, spanning more than 100 countries and customs territories, and covering most world trade flows (at least of goods). This was a major achievement for nondiscriminatory trade.1 The world seemed to be moving toward an overarching, global, and nondiscriminatory framework that would eventually cover all countries (through their accession to the WTO) and all aspects of trade (through negotiations among WTO members for the further liberalization of trade in goods and services and development of all the required and related rules).This has not happened, however. Instead, discriminatory trade agreements (DTAs)2 have proliferated while the WTO Doha Round of trade negotiations has languished for over 12 years. The increasing number and scope of DTAs is fast reshaping the architecture of the world trading system and the trading environment for developing countries. This is particularly relevant for countries such as Pakistan, which are not party to many DTAs. Moreover, the integration of these diverse agreements into a multilateral framework that facilitates the expansion of trade on beneficial terms for all is one of the main challenges facing the world trading system.This paper is an attempt to better understand the trend of DTAs over the last 25 years while drawing lessons for Pakistan. For the purposes of this analysis, we divide all DTAs into two broad categories: (i) those based on reciprocity among their members, i.e., regional trade agreements (RTAs);3 and (ii) those under which one country or defined group of countries offers nonreciprocal trade preferences to another, i.e., preferential trade agreements (PTAs).4Given the depth and breadth of the subject, this paper cannot claim to be comprehensive and exhaustive. Rather, it aims to provide an overall picture and broad-brush analysis to facilitate discussion and further targeted research. Sections 2 and 3 analyze the evolution of RTAs and PTAs, respectively. We trace key developments in both over the last 25 years or so, leading up to the present and identifying the main players, beneficiaries, features, and trends. Section 4 briefly discusses the so-called "mega-regionals," i.e., the proposed Trans-Pacific Partnership (TPP) and Transatlantic Trade and Investment Partnership (T-TIP). Section 5 highlights the specific implications of RTAs and PTAs for Pakistan and then concludes the study by offering some policy suggestions.2. RTAs: Beyond Numbers5As of 31 July 2013, the General Agreement on Tariffs and Trade (GATT)/WTO has received some 575 RTA notifications (counting goods, services, and accessions separately) (WTO, 2014). Of these, 408 notifications were made under Article XXIV of GATT 1947 or GATT 1994, 38 under the Enabling Clause, and 129 under Article V of the General Agreement on Trade in Services. Of these 575 RTAs, 379 were in force at the time.However, the number of RTAs in force at the time of writing is 278 (Figure 1). In addition to bringing out the general difficulty of counting and tracking RTA activity precisely, this brings home a very important point. Not all announced RTAs see the light of day. Only about half complete the negotiations stage, reach a final agreement, undergo domestic ratification, and are finally implemented by the participants. While the WTO can rightly be faulted for slow progress, the record of RTAs is not a shining example of success either.increasingly common in the early 1990s when an unusually high number of agreements entered into force-26 between 1990 and 1994 alone, compared to just 24 up until 1990. The number of RTA notifications continued to increase in the second half of the 1990s. The mid-2000s onward saw the largest number of RTAs notified and coming into force to date. …