Complete Doha Round demand reform states
WTO trade rounds have been the most effective driver for reform of the CAP because they provide an exogenous pressure which helps to overcome internal obstacles. Manufacturing and service industry interests exert pressure when they see an agreement with benefits for them jeopradised by a failure to agree on agriculture. This is what happened in the concluding phase of the Uruguay Round.
Unfortunately for the hopes of reformers the political context has changed. The current administration in the US has not given a higher priority to trade policy and is preoccupied with coming up with a political deal that can provide an agreement on the budget. The political pressure for greater liberalisation that came in the past from agribusiness interests has weakened.
Even if the US and the EU could agree on the outlines of a deal they can no longer impose it on the other participants with some side payments. Emerging countries have become powerful players and while liberalisation suits Brazil's interests, India and China want to protect their peasant populations.