【正文】
iberalization was supposed to be the World Trade Organization39。s markets. This will enable more efficient firms to expand production and achieve scale economies and will encourage more specialization, as has been seen during European integration over recent decades. The phrase development round may suggest to some that the key objective of the current round is to get rich countries to drop their barriers against goods from poor countries. But that move alone would provide only half of the potential benefit that developing countries could gain from a more open trading system. Fully half of the potential benefit to developing countries of trade liberalization es from better access to each other39。 it is most monly small changes in the process or products of a firm. Firms in protected markets tend to bee placent, whereas a large petitive market provides a significant outlet for good ideas and highquality production. The large market also provides for a finer division of labor. A developing country that lowers its own import barriers against manufactured products will typically find that its firms bee part of global production works in which different ponents and activities that feed into one final product originate in different countries. For developing countries to take part in sophisticated global production works, they need to have investment climates in which it is relatively easy for firms to start up and expand. They need good transport links to the wider world and efficient customs administration. A final point about the Doha Round is that it is also trying to take up issues of liberalizing trade in services. Many modern services contribute to a good investment climate: finance, insurance, logistics, port management, and transport services, to name a few. Liberalizing imports of these modern services can help developing countries build a stronger investment climate so that their firms can more easily take advantage of global market opportunities. Political Leadership Needed A prehensive round of trade liberalization will provide benefits to all the countries that are members of the World Trade Organization. If that is true, then why is it so difficul