Article published on the 2008-07-21 Latest update 2008-07-25 19:03 TU
"It is the end game, if we cannot reach agreement by the end of this month on these two areas I've mention, it seems clear that we will have difficulty for some time to come," he told RFI.
Keith Rockwell, spokesman for the World Trade Organisation, in Geneva.
Amy Berry, Trade Advisor to the NGO Oxfam in Geneva, said that using this meeting as a "last chance" could hurt the poorest countries in the long run.
"I would be a little bit wary of the 'last chance, last opportunity' rhetoric if its used as a way to push something through, that ultimately, and based on our most recent analysis, is not going to be in the interests of many developing countries," she said.
Supporters of the talks say a deal could boost the world economy by up to $100bn a year.
But critics say any agreement is unlikely to fully address inequalities in trading relationships between the richest and poorest countries.
A WTO agreement has been hindered by differences between EU chief trade negotiator Peter Mandelson and French President Nicolas Sarkozy, who sees Mandelson as a "neoliberal" prepared to sacrifice France's hefty agricultural sector for the sake of a deal.