Outside looking in: non-accession to the WTO

Since its institutional birth in 1947, the General Agreement on Tariffs and Trade (GATT) / World Trade Organization (WTO) has mushroomed from 23 original contracting parties to 157 members as of September 2012. Another 28 countries are currently observers, each at varying stages of the accession process. WTO members and observers cover some 99 per cent of the world's population and over 99 per cent of global trade. However, there are still 13 states outside the multilateral rules-based trading system. This paper argues that existing explanations of membership and accession do not fully explain why these states remain outside the WTO, with implications for membership in international institutions generally. The paper tests hypotheses of non-membership based on a lack of willingness (domestic support), ability (technical capacity) or external pressure, and augments these statistical findings with a comparative country-level narrative of WTO (non-)accession decision-making in two small island countries.