The latest and, according to many observers, most important meeting in the ongoing Doha Round of global trade talks opened in Cancun, Mexico on September 10th. As trade ministers from the World Trade Organisation’s member states arrived for what promised to be a tough week of discussion and debate, agricultural subsidies - that most stubborn of free-trade barriers - was on everyone’s mind. Almost two years after it was opened in the Qatari capital, the Doha Round has accomplished little. Farmers have proven a most resilient bunch and their sway in many of the world’s leading industrial countries threatens to undermine the wider aims of global free traders.