From an editorial:
Big developing countries have been reluctant to reduce tariff ceilings, allowing themselves the option to increase their tariffs at any moment. They have been unwilling to open service sectors, like accounting or electricity generation, to foreign competition. They insist on being able to increase their barriers to protect farmers against sharp increases in food imports from cheaper producers abroad. They must be willing to make concessions on these points. The rich West will also have to give more. The United States and Europe must slash agricultural subsidies more aggressively and refrain from adding more. The United States will have to reduce its own agricultural barriers — such as the one against Brazilian ethanol. It might have to offer more visas to professionals from countries like India.
It all sounds so simple when you see it written up this way, but it's easier said than done!