Non-reciprocal preferential trade agreements allow least developed countries to benefit from lowered tariffs on certain products, to boost their access to international markets without the requirement of lowering their own tariffs in return. In the run-up to the WTO Summit in December, there has been debate over the value of these PTAs. Those not in favour argue that they distort the market and prevent multilateral free trade. Those supporting PTAs argue that their erosion will adversely affect developing countries, and especially small-scale producers. This link takes you to recent research compiled by the Eldis Trade editor.