Agricultural trade reform is critical to a favourable development outcome from the Doha Development agenda. But agricultural policies and the policy reforms being contemplated are fiendishly complicated, and the devil is in the details. This study builds up from the essential detail of the tariffs and other protection measures, and uses this information to provide an analysis of the big-picture implications of proposed reforms. The study highlights the risk that the potentially large gains will be lost through excessive flexibilities and exceptions.