It comes back to the pricing issue and I think as Trevor outlined before the block tariff approach, the lifeline subsidies and so on is something that we probably all agree on as an approach to that.

BBC: NEWS | Have Your Say | Water privatisation: Ask the experts

William Thomas, a senior American congressman, told delegates that rich-world subsidies and other non-tariff barriers, such as sanitation inspections, still block imports of African foodstuffs: crateloads rot in American ports.

ECONOMIST: Trade and development